| Rank | Czech as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 4.7% | Putnam Central School District / 738 |
| 2. | 2.9% | Binghamton Common School District / 429 |
| 3. | 2.5% | Margaretville Central School District / 3,925 |
| 4. | 2.3% | Little Falls City School District / 7,387 |
| 5. | 2.2% | Johnson City Central School District / 19,065 |
| 6. | 2.1% | Tuckahoe Common School District / 3,515 |
| 7. | 2.1% | Newark Valley Central School District / 7,520 |
| 8. | 2.1% | Shelter Island Union Free School District / 2,669 |
| 9. | 2.0% | Union-Endicott Central School District / 30,543 |
| 10. | 2.0% | Washingtonville Central School District / 23,978 |
| 11. | 1.9% | Mayfield Central School District / 6,403 |
| 12. | 1.9% | Afton Central School District / 3,877 |
| 13. | 1.9% | East Islip Union Free School District / 24,641 |
| 14. | 1.8% | Averill Park Central School District / 19,382 |
| 15. | 1.8% | Maine-Endwell Central School District / 16,096 |
| 16. | 1.8% | Sullivan West Central School District / 11,023 |
| 17. | 1.8% | Eldred Central School District / 5,061 |
| 18. | 1.6% | Raquette Lake Union Free School District / 70 |
| 19. | 1.6% | Cobleskill-Richmondville Central School District / 13,816 |
| 20. | 1.6% | Tri-Valley Central School District / 6,137 |
| 21. | 1.6% | Fire Island Union Free School District / 459 |
| 22. | 1.6% | Livingston Manor Central School District / 3,542 |
| 23. | 1.5% | Quogue Union Free School District / 968 |
| 23. | 1.5% | Oysterponds Union Free School District / 1,582 |
| 25. | 1.5% | Minisink Valley Central School District / 22,830 |
| 26. | 1.5% | Southold Union Free School District / 6,630 |
| 27. | 1.4% | Whitesville Central School District / 1,123 |
| 27. | 1.4% | Rhinebeck Central School District / 9,769 |
| 29. | 1.4% | Schenevus Central School District / 2,456 |
| 30. | 1.4% | Granville Central School District / 7,365 |
| 31. | 1.4% | Downsville Central School District / 2,124 |
| 32. | 1.3% | Corinth Central School District / 7,572 |
| 33. | 1.3% | Chenango Forks Central School District / 9,896 |
| 34. | 1.3% | Florida Union Free School District / 4,715 |
| 35. | 1.3% | Miller Place Union Free School District / 14,663 |
| 36. | 1.2% | Scarsdale Union Free School District / 18,337 |
| 37. | 1.2% | Stillwater Central School District / 7,207 |
| 38. | 1.2% | LaFargeville Central School District / 3,224 |
| 38. | 1.2% | Lakeland Central School District / 35,491 |
| 40. | 1.2% | Ballston Spa Central School District / 27,883 |
| 40. | 1.2% | Minerva Central School District / 598 |
| 40. | 1.2% | Schroon Lake Central School District / 1,520 |
| 43. | 1.2% | Skaneateles Central School District / 9,033 |
| 44. | 1.2% | Chazy Union Free School District / 2,966 |
| 44. | 1.2% | Sherman Central School District / 2,849 |
| 46. | 1.2% | Carle Place Union Free School District / 9,846 |
| 46. | 1.2% | Saugerties Central School District / 20,505 |
| 48. | 1.1% | Elmira Heights Central School District / 6,749 |
| 49. | 1.1% | Oriskany Central School District / 4,907 |
| 50. | 1.1% | Harpursville Central School District / 4,998 |
| 50. | 1.1% | Hendrick Hudson Central School District / 15,558 |
| 52. | 1.1% | Binghamton City School District / 46,771 |
| 52. | 1.1% | Vestal Central School District / 31,893 |
| 54. | 1.1% | Center Moriches Union Free School District / 8,010 |
| 55. | 1.1% | Greene Central School District / 7,238 |
| 56. | 1.1% | Geneva City School District / 17,666 |
| 57. | 1.0% | Smithtown Central School District / 58,044 |
| 57. | 1.0% | Red Hook Central School District / 13,727 |
| 59. | 1.0% | Owego-Apalachin Central School District / 14,475 |
| 60. | 1.0% | Liberty Central School District / 10,788 |
| 61. | 1.0% | Clymer Central School District / 3,068 |
| 61. | 1.0% | East Rockaway Union Free School District / 9,070 |
| 63. | 1.0% | Hewlett-Woodmere Union Free School District / 19,628 |
| 63. | 1.0% | Beaver River Central School District / 5,475 |
| 65. | 1.0% | Island Park Union Free School District / 8,646 |
| 65. | 1.0% | Highland Central School District / 11,732 |
| 67. | 1.0% | Canajoharie Central School District / 6,327 |
| 68. | 1.0% | Eastport-South Manor Central School District / 19,473 |
| 69. | 0.9% | Burnt Hills-Ballston Lake Central School District / 18,707 |
| 70. | 0.9% | Bedford Central School District / 29,116 |
| 70. | 0.9% | Pine Plains Central School District / 9,048 |
| 72. | 0.9% | Croton-Harmon Union Free School District / 9,408 |
| 73. | 0.9% | Norwich City School District / 13,285 |
| 74. | 0.9% | Bayport-Blue Point Union Free School District / 13,242 |
| 74. | 0.9% | Three Village Central School District / 46,932 |
| 74. | 0.9% | Tioga Central School District / 6,326 |
| 74. | 0.9% | Rocky Point Union Free School District / 18,570 |
| 78. | 0.9% | Hammondsport Central School District / 3,887 |
| 78. | 0.9% | Plainedge Union Free School District / 20,087 |
| 78. | 0.9% | Hyde Park Central School District / 33,008 |
| 78. | 0.9% | Solvay Union Free School District / 9,799 |
| 78. | 0.9% | Broadalbin-Perth Central School District / 11,286 |
| 83. | 0.9% | Mattituck-Cutchogue Union Free School District / 9,702 |
| 83. | 0.9% | North Salem Central School District / 7,540 |
| 83. | 0.9% | Avon Central School District / 7,101 |
| 86. | 0.9% | Brighton Central School District / 23,578 |
| 86. | 0.9% | Grand Island Central School District / 20,580 |
| 86. | 0.9% | Watkins Glen Central School District / 8,473 |
| 89. | 0.8% | Islip Union Free School District / 18,917 |
| 89. | 0.8% | Kiryas Joel Village Union Free School District / 21,201 |
| 89. | 0.8% | Middle Country Central School District / 65,366 |
| 89. | 0.8% | East Quogue Union Free School District / 4,233 |
| 89. | 0.8% | Odessa-Montour Central School District / 5,501 |
| 94. | 0.8% | Tuxedo Union Free School District / 2,657 |
| 94. | 0.8% | Pleasantville Union Free School District / 8,336 |
| 96. | 0.8% | Lake Placid Central School District / 6,114 |
| 96. | 0.8% | Cold Spring Harbor Central School District / 7,931 |
| 96. | 0.8% | Sachem Central School District / 83,350 |
| 96. | 0.8% | Wantagh Union Free School District / 17,991 |
| 100. | 0.8% | Yorktown Central School District / 20,917 |
| 101. | 0.8% | Niskayuna Central School District / 22,944 |
| 101. | 0.8% | Delhi Central School District / 7,892 |
| 103. | 0.8% | Hastings-on-Hudson Union Free School District / 8,631 |
| 103. | 0.8% | Webb Town Union Free School District / 2,165 |
| 103. | 0.8% | LaFayette Central School District / 4,947 |
| 106. | 0.8% | Corning City School District / 34,681 |
| 106. | 0.8% | Walton Central School District / 6,561 |
| 106. | 0.8% | East Moriches Union Free School District / 5,571 |
| 106. | 0.8% | Ithaca City School District / 67,173 |
| 106. | 0.8% | Oceanside Union Free School District / 34,842 |
| 106. | 0.8% | Holland Central School District / 6,745 |
| 112. | 0.8% | Beacon City School District / 27,012 |
| 112. | 0.8% | Connetquot Central School District / 39,945 |
| 112. | 0.8% | South Huntington Union Free School District / 39,314 |
| 112. | 0.8% | Commack Union Free School District / 37,187 |
| 112. | 0.8% | Somers Central School District / 19,724 |
| 117. | 0.8% | Gates-Chili Central School District / 33,289 |
| 117. | 0.8% | Susquehanna Valley Central School District / 10,636 |
| 117. | 0.8% | Marcellus Central School District / 10,632 |
| 117. | 0.8% | Port Jefferson Union Free School District / 7,888 |
| 121. | 0.7% | Bethpage Union Free School District / 18,587 |
| 121. | 0.7% | New Paltz Central School District / 19,245 |
| 121. | 0.7% | Newark Central School District / 15,280 |
| 121. | 0.7% | Saratoga Springs City School District / 49,980 |
| 125. | 0.7% | Worcester Central School District / 2,765 |
| 125. | 0.7% | Mount Pleasant Central School District / 13,151 |
| 125. | 0.7% | Sherburne-Earlville Central School District / 8,659 |
| 128. | 0.7% | Cornwall Central School District / 16,829 |
| 128. | 0.7% | Ramapo Central School District / 28,386 |
| 128. | 0.7% | Schoharie Central School District / 6,748 |
| 131. | 0.7% | Owen D. Young Central School District / 1,634 |
| 131. | 0.7% | Bellmore Union Free School District / 12,602 |
| 131. | 0.7% | Fallsburg Central School District / 10,719 |
| 131. | 0.7% | Locust Valley Central School District / 15,447 |
| 131. | 0.7% | Brookfield Central School District / 1,618 |
| 136. | 0.7% | Plattsburgh City School District / 19,840 |
| 136. | 0.7% | Johnstown City School District / 11,150 |
| 138. | 0.7% | Irvington Union Free School District / 9,668 |
| 138. | 0.7% | Garden City Union Free School District / 22,543 |
| 140. | 0.7% | Brewster Central School District / 22,698 |
| 140. | 0.7% | Oakfield-Alabama Central School District / 5,575 |
| 140. | 0.7% | Menands Union Free School District / 3,704 |
| 140. | 0.7% | Name N/A / 15,077 |
| 140. | 0.7% | Orchard Park Central School District / 32,141 |
| 145. | 0.7% | Bay Shore Union Free School District / 35,375 |
| 145. | 0.7% | Pine Bush Central School District / 33,114 |
| 145. | 0.7% | Ripley Central School District / 1,630 |
| 148. | 0.7% | Plainview-Old Bethpage Central School District / 29,054 |
| 148. | 0.7% | Cato-Meridian Central School District / 5,982 |
| 148. | 0.7% | Dolgeville Central School District / 5,270 |
| 151. | 0.7% | Cherry Valley-Springfield Central School District / 4,005 |
| 151. | 0.7% | South Seneca Central School District / 6,642 |
| 151. | 0.7% | Malverne Union Free School District / 15,454 |
| 151. | 0.7% | Whitehall Central School District / 4,840 |
| 151. | 0.7% | Riverhead Central School District / 41,129 |
| 151. | 0.7% | North Shore Central School District / 16,620 |
| 157. | 0.6% | Name N/A / 6,035 |
| 157. | 0.6% | Monroe-Woodbury Central School District / 36,628 |
| 157. | 0.6% | Spackenkill Union Free School District / 8,959 |
| 157. | 0.6% | East Hampton Union Free School District / 9,269 |
| 157. | 0.6% | Mamaroneck Union Free School District / 28,635 |
| 157. | 0.6% | South Colonie Central School District / 39,752 |
| 157. | 0.6% | Windsor Central School District / 11,182 |
| 164. | 0.6% | Putnam Valley Central School District / 10,886 |
| 164. | 0.6% | Shenendehowa Central School District / 64,209 |
| 164. | 0.6% | Richfield Springs Central School District / 4,017 |
| 167. | 0.6% | Oyster Bay-East Norwich Central School District / 12,938 |
| 167. | 0.6% | Allegany-Limestone Central School District / 9,265 |
| 169. | 0.6% | Dryden Central School District / 12,972 |
| 169. | 0.6% | Whitney Point Central School District / 9,137 |
| 171. | 0.6% | Geneseo Central School District / 11,316 |
| 171. | 0.6% | Duanesburg Central School District / 4,917 |
| 171. | 0.6% | Jericho Union Free School District / 16,979 |
| 171. | 0.6% | Eastchester Union Free School District / 18,488 |
| 171. | 0.6% | Belleville Henderson Central School District / 3,801 |
| 171. | 0.6% | Springs Union Free School District / 5,855 |
| 171. | 0.6% | Elmira City School District / 48,479 |
| 171. | 0.6% | Bethlehem Central School District / 28,297 |
| 179. | 0.6% | Arlington Central School District / 57,812 |
| 179. | 0.6% | Roscoe Central School District / 2,062 |
| 179. | 0.6% | Camden Central School District / 12,928 |
| 179. | 0.6% | Sayville Union Free School District / 17,688 |
| 179. | 0.6% | Canandaigua City School District / 26,377 |
| 179. | 0.6% | William Floyd Union Free School District / 49,959 |
| 185. | 0.6% | Cambridge Central School District / 6,086 |
| 185. | 0.6% | Saranac Lake Central School District / 13,933 |
| 187. | 0.6% | Bemus Point Central School District / 4,917 |
| 187. | 0.6% | Elba Central School District / 2,809 |
| 187. | 0.6% | New Rochelle City School District / 78,476 |
| 190. | 0.6% | North Babylon Union Free School District / 30,066 |
| 190. | 0.6% | Bronxville Union Free School District / 6,378 |
| 190. | 0.6% | Letchworth Central School District / 6,255 |
| 190. | 0.6% | Lansing Central School District / 7,352 |
| 190. | 0.6% | Portville Central School District / 4,734 |
| 195. | 0.5% | Harborfields Central School District / 19,050 |
| 195. | 0.5% | Prattsburgh Central School District / 3,331 |
| 195. | 0.5% | Oneida City School District / 16,075 |
| 195. | 0.5% | Warrensburg Central School District / 5,918 |
| 195. | 0.5% | Edgemont Union Free School District / 7,565 |
| 200. | 0.5% | Perry Central School District / 6,004 |
| 200. | 0.5% | Onteora Central School District / 14,993 |
| 200. | 0.5% | Cohoes City School District / 16,195 |
| 200. | 0.5% | Windham-Ashland-Jewett Central School District / 3,026 |
| 200. | 0.5% | Weedsport Central School District / 5,154 |
| 200. | 0.5% | Highland Falls Central School District / 12,327 |
| 200. | 0.5% | South Kortright Central School District / 2,894 |
| 207. | 0.5% | Northeastern Clinton Central School District / 8,604 |
| 207. | 0.5% | Honeoye Falls-Lima Central School District / 13,460 |
| 207. | 0.5% | Penfield Central School District / 32,417 |
| 210. | 0.5% | Mahopac Central School District / 26,974 |
| 210. | 0.5% | Coxsackie-Athens Central School District / 12,886 |
| 210. | 0.5% | Depew Union Free School District / 15,780 |
| 210. | 0.5% | North Colonie Central School District / 40,010 |
| 210. | 0.5% | Baldwin Union Free School District / 33,433 |
| 210. | 0.5% | Peekskill City School District / 23,875 |
| 216. | 0.5% | Monticello Central School District / 20,879 |
| 216. | 0.5% | Great Neck Union Free School District / 45,249 |
| 216. | 0.5% | Garrison Union Free School District / 3,033 |
| 216. | 0.5% | Lancaster Central School District / 40,800 |
| 216. | 0.5% | Salem Central School District / 4,099 |
| 216. | 0.5% | Schodack Central School District / 6,185 |
| 216. | 0.5% | Edinburg Common School District / 1,415 |
| 223. | 0.5% | Friendship Central School District / 2,077 |
| 223. | 0.5% | Pine Valley Central School District / 4,557 |
| 223. | 0.5% | Horseheads Central School District / 27,263 |
| 223. | 0.5% | Sag Harbor Union Free School District / 6,957 |
| 223. | 0.5% | Webster Central School District / 55,906 |
| 228. | 0.5% | East Rochester Union Free School District / 8,992 |
| 228. | 0.5% | Hermon-DeKalb Central School District / 2,414 |
| 228. | 0.5% | Ravena-Coeymans-Selkirk Central School District / 14,099 |
| 228. | 0.5% | Berlin Central School District / 6,656 |
| 228. | 0.5% | Penn Yan Central School District / 15,535 |
| 228. | 0.5% | Massapequa Union Free School District / 47,800 |
| 228. | 0.5% | North Tonawanda City School District / 31,245 |
| 228. | 0.5% | South Country Central School District / 30,035 |
| 228. | 0.5% | Patchogue-Medford Union Free School District / 51,872 |
| 228. | 0.5% | Berne-Knox-Westerlo Central School District / 6,399 |
| 238. | 0.5% | Mineola Union Free School District / 23,780 |
| 238. | 0.5% | Warwick Valley Central School District / 23,677 |
| 238. | 0.5% | Chester Union Free School District / 6,365 |
| 238. | 0.5% | Greenville Central School District / 8,118 |
| 242. | 0.5% | Wappingers Central School District / 74,648 |
| 242. | 0.5% | Fonda-Fultonville Central School District / 8,668 |
| 242. | 0.5% | Madison Central School District / 3,339 |
| 242. | 0.5% | West Babylon Union Free School District / 28,599 |
| 242. | 0.5% | Guilderland Central School District / 36,518 |
| 242. | 0.5% | Longwood Central School District / 65,518 |
| 248. | 0.5% | Carmel Central School District / 29,615 |
| 248. | 0.5% | Wainscott Common School District / 719 |
| 248. | 0.5% | Falconer Central School District / 7,902 |
| 248. | 0.5% | Cassadaga Valley Central School District / 7,283 |
| 248. | 0.5% | Scotia-Glenville Central School District / 18,637 |
| 248. | 0.5% | New Lebanon Central School District / 4,080 |
| 248. | 0.5% | Heuvelton Central School District / 4,357 |
| 248. | 0.5% | Franklin Square Union Free School District / 26,918 |
| 256. | 0.4% | Addison Central School District / 7,357 |
| 256. | 0.4% | Lawrence Union Free School District / 34,932 |
| 258. | 0.4% | Huntington Union Free School District / 35,861 |
| 258. | 0.4% | Oneonta City School District / 20,319 |
| 258. | 0.4% | Canton Central School District / 12,038 |
| 258. | 0.4% | Mount Sinai Union Free School District / 12,822 |
| 258. | 0.4% | Hannibal Central School District / 8,151 |
| 258. | 0.4% | Northport-East Northport Union Free School District / 35,621 |
| 258. | 0.4% | Baldwinsville Central School District / 35,697 |
| 265. | 0.4% | The Tarrytowns Union Free School District / 19,430 |
| 265. | 0.4% | Mount Markham Central School District / 7,011 |
| 265. | 0.4% | Yorkshire-Pioneer Central School District / 15,914 |
| 265. | 0.4% | Bloomfield Central School District / 6,612 |
| 265. | 0.4% | Voorheesville Central School District / 7,160 |
| 265. | 0.4% | Wallkill Central School District / 20,664 |
| 265. | 0.4% | Queensbury Union Free School District / 22,342 |
| 265. | 0.4% | Sidney Central School District / 7,838 |
| 265. | 0.4% | Amsterdam City School District / 25,346 |
| 265. | 0.4% | Hilton Central School District / 26,684 |
| 265. | 0.4% | Clarkstown Central School District / 48,668 |
| 265. | 0.4% | Babylon Union Free School District / 11,967 |
| 277. | 0.4% | Tonawanda City School District / 15,048 |
| 277. | 0.4% | Glen Cove City School District / 27,161 |
| 277. | 0.4% | Chappaqua Central School District / 16,780 |
| 277. | 0.4% | Hauppauge Union Free School District / 23,017 |
| 277. | 0.4% | West Irondequoit Central School District / 24,111 |
| 282. | 0.4% | Cazenovia Central School District / 10,839 |
| 282. | 0.4% | Fillmore Central School District / 4,966 |
| 282. | 0.4% | Wellsville Central School District / 9,482 |
| 282. | 0.4% | Hudson City School District / 15,644 |
| 282. | 0.4% | Shoreham-Wading River Central School District / 12,274 |
| 287. | 0.4% | Sandy Creek Central School District / 5,751 |
| 287. | 0.4% | Levittown Union Free School District / 46,214 |
| 287. | 0.4% | Kenmore-Tonawanda Union Free School District / 67,516 |
| 287. | 0.4% | Port Washington Union Free School District / 31,145 |
| 287. | 0.4% | Franklinville Central School District / 4,381 |
| 287. | 0.4% | Albany City School District / 98,287 |
| 287. | 0.4% | Herkimer Central School District / 10,050 |
| 287. | 0.4% | Rotterdam-Mohonasen Central School District / 20,553 |
| 295. | 0.4% | Southern Cayuga Central School District / 6,545 |
| 295. | 0.4% | Nanuet Union Free School District / 14,077 |
| 295. | 0.4% | Caledonia-Mumford Central School District / 5,342 |
| 295. | 0.4% | Fairport Central School District / 40,214 |
| 299. | 0.4% | Auburn City School District / 33,295 |
| 299. | 0.4% | Westhampton Beach Union Free School District / 5,399 |
| 299. | 0.4% | Montauk Union Free School District / 3,471 |
| 299. | 0.4% | Marion Central School District / 5,546 |
| 299. | 0.4% | Katonah-Lewisboro Union Free School District / 18,350 |
| 304. | 0.4% | Valhalla Union Free School District / 10,130 |
| 304. | 0.4% | Goshen Central School District / 18,501 |
| 304. | 0.4% | Campbell-Savona Central School District / 5,103 |
| 304. | 0.4% | Chittenango Central School District / 13,615 |
| 304. | 0.4% | Kings Park Central School District / 23,011 |
| 304. | 0.4% | Half Hollow Hills Central School District / 47,849 |
| 304. | 0.4% | Pulaski Central School District / 5,748 |
| 311. | 0.4% | Fayetteville-Manlius Central School District / 25,462 |
| 311. | 0.4% | Evans-Brant Central School District / 17,855 |
| 311. | 0.4% | East Irondequoit Central School District / 27,483 |
| 314. | 0.3% | Cooperstown Central School District / 6,645 |
| 314. | 0.3% | Belfast Central School District / 2,517 |
| 314. | 0.3% | North Syracuse Central School District / 60,246 |
| 314. | 0.3% | Whitesboro Central School District / 25,723 |
| 314. | 0.3% | Candor Central School District / 4,739 |
| 314. | 0.3% | Sweet Home Central School District / 36,403 |
| 314. | 0.3% | Deer Park Union Free School District / 25,545 |
| 314. | 0.3% | Roslyn Union Free School District / 17,914 |
| 314. | 0.3% | Royalton-Hartland Central School District / 9,037 |
| 314. | 0.3% | Starpoint Central School District / 18,462 |
| 314. | 0.3% | Lockport City School District / 35,389 |
| 314. | 0.3% | Merrick Union Free School District / 17,119 |
| 314. | 0.3% | Farmingdale Union Free School District / 40,772 |
| 327. | 0.3% | Long Beach City School District / 38,860 |
| 327. | 0.3% | Newfield Central School District / 5,674 |
| 327. | 0.3% | Bellmore-Merrick Central High School District / 69,881 |
| 327. | 0.3% | Elwood Union Free School District / 13,188 |
| 327. | 0.3% | Manhasset Union Free School District / 15,723 |
| 327. | 0.3% | Forestville Central School District / 3,504 |
| 333. | 0.3% | Stamford Central School District / 2,964 |
| 333. | 0.3% | Sodus Central School District / 7,618 |
| 333. | 0.3% | Southampton Union Free School District / 9,915 |
| 333. | 0.3% | Laurens Central School District / 2,896 |
| 333. | 0.3% | Poland Central School District / 4,379 |
| 338. | 0.3% | Bainbridge-Guilford Central School District / 5,362 |
| 338. | 0.3% | Southwestern Central School District / 9,320 |
| 338. | 0.3% | Pavilion Central School District / 4,595 |
| 338. | 0.3% | Clinton Central School District / 12,050 |
| 338. | 0.3% | West Islip Union Free School District / 27,300 |
| 338. | 0.3% | Newburgh City School District / 66,767 |
| 344. | 0.3% | Rockville Centre Union Free School District / 22,252 |
| 344. | 0.3% | Yonkers City School District / 198,654 |
| 344. | 0.3% | Altmar-Parish-Williamstown Central School District / 7,395 |
| 344. | 0.3% | Kingston City School District / 52,069 |
| 344. | 0.3% | Sharon Springs Central School District / 2,024 |
| 344. | 0.3% | Waterloo Central School District / 11,979 |
| 344. | 0.3% | Greenwood Lake Union Free School District / 6,213 |
| 344. | 0.3% | Peru Central School District / 12,781 |
| 344. | 0.3% | West Hempstead Union Free School District / 16,015 |
| 344. | 0.3% | Dobbs Ferry Union Free School District / 9,910 |
| 354. | 0.3% | Amagansett Union Free School District / 1,527 |
| 354. | 0.3% | Schenectady City School District / 66,055 |
| 354. | 0.3% | Trumansburg Central School District / 7,535 |
| 354. | 0.3% | Homer Central School District / 12,932 |
| 354. | 0.3% | Floral Park-Bellerose Union Free School District / 20,249 |
| 354. | 0.3% | Brookhaven-Comsewogue Union Free School District / 25,659 |
| 354. | 0.3% | Middletown City School District / 41,245 |
| 354. | 0.3% | Eden Central School District / 10,099 |
| 354. | 0.3% | Troy City School District / 40,142 |
| 354. | 0.3% | Brunswick Central School District (Brittonkill) / 7,894 |
| 354. | 0.3% | Cleveland Hill Union Free School District / 11,266 |
| 365. | 0.3% | Hadley-Luzerne Central School District / 6,521 |
| 365. | 0.3% | Ardsley Union Free School District / 9,410 |
| 365. | 0.3% | Mexico Central School District / 12,930 |
| 365. | 0.3% | Chenango Valley Central School District / 12,440 |
| 365. | 0.3% | North Merrick Union Free School District / 13,575 |
| 365. | 0.3% | Schalmont Central School District / 13,919 |
| 365. | 0.3% | Manchester-Shortsville Central School District / 5,859 |
| 372. | 0.3% | West Valley Central School District / 2,339 |
| 372. | 0.3% | Frontier Central School District / 36,471 |
| 372. | 0.3% | Hamilton Central School District / 6,774 |
| 372. | 0.3% | Clarence Central School District / 28,344 |
| 372. | 0.3% | Potsdam Central School District / 15,411 |
| 372. | 0.3% | Chatham Central School District / 9,379 |
| 372. | 0.3% | Holley Central School District / 7,774 |
| 372. | 0.3% | Glens Falls City School District / 14,668 |
| 372. | 0.3% | Williamsville Central School District / 74,522 |
| 372. | 0.3% | Pawling Central School District / 8,653 |
| 372. | 0.3% | Bradford Central School District / 2,063 |
| 383. | 0.3% | Copiague Union Free School District / 30,592 |
| 383. | 0.3% | Georgetown-South Otselic Central School District / 2,209 |
| 383. | 0.3% | Pittsford Central School District / 34,549 |
| 383. | 0.3% | South Glens Falls Central School District / 19,938 |
| 383. | 0.3% | Greece Central School District / 82,909 |
| 388. | 0.3% | Valley Stream Union Free School District 13 / 28,377 |
| 388. | 0.3% | Hornell City School District / 10,552 |
| 388. | 0.3% | Norwood-Norfolk Central School District / 6,677 |
| 388. | 0.3% | Westfield Central School District / 5,104 |
| 388. | 0.3% | Lewiston-Porter Central School District / 18,842 |
| 388. | 0.3% | Middleburgh Central School District / 6,035 |
| 388. | 0.3% | Spencerport Central School District / 24,015 |
| 388. | 0.3% | Rush-Henrietta Central School District / 53,169 |
| 388. | 0.3% | Westport Central School District / 1,443 |
| 388. | 0.3% | Nyack Union Free School District / 24,767 |
| 388. | 0.3% | Wayne Central School District / 14,914 |
| 399. | 0.2% | Panama Central School District / 3,444 |
| 399. | 0.2% | Tupper Lake Central School District / 6,271 |
| 399. | 0.2% | West Seneca Central School District / 54,218 |
| 399. | 0.2% | AuSable Valley Central School District / 9,547 |
| 399. | 0.2% | Tully Central School District / 5,955 |
| 399. | 0.2% | Morris Central School District / 2,071 |
| 399. | 0.2% | Deposit Central School District / 3,996 |
| 399. | 0.2% | Name N/A / 256,974 |
| 399. | 0.2% | Syosset Central School District / 33,944 |
| 399. | 0.2% | Hammond Central School District / 2,155 |
| 399. | 0.2% | Byram Hills Central School District / 10,976 |
| 399. | 0.2% | Wayland-Cohocton Central School District / 9,182 |
| 399. | 0.2% | Port Jervis City School District / 17,794 |
| 412. | 0.2% | Central Square Central School District / 25,512 |
| 412. | 0.2% | Elizabethtown-Lewis Central School District / 2,666 |
| 412. | 0.2% | Haverstraw-Stony Point Central School District / 48,417 |
| 412. | 0.2% | South Lewis Central School District / 7,348 |
| 412. | 0.2% | Rye Neck Union Free School District / 8,712 |
| 412. | 0.2% | Willsboro Central School District / 2,468 |
| 412. | 0.2% | Churchville-Chili Central School District / 27,523 |
| 412. | 0.2% | Ellicottville Central School District / 3,710 |
| 412. | 0.2% | Ellenville Central School District / 13,050 |
| 412. | 0.2% | Seaford Union Free School District / 16,415 |
| 412. | 0.2% | Canastota Central School District / 9,749 |
| 423. | 0.2% | Jamesville-DeWitt Central School District / 18,742 |
| 423. | 0.2% | Kendall Central School District / 5,585 |
| 423. | 0.2% | Genesee Valley Central School District at Angelica-Belmont / 4,421 |
| 423. | 0.2% | Sauquoit Valley Central School District / 7,012 |
| 423. | 0.2% | Kinderhook Central School District / 13,520 |
| 423. | 0.2% | Jefferson Central School District / 1,944 |
| 423. | 0.2% | Sewanhaka Central High School District / 125,240 |
| 423. | 0.2% | Pearl River Union Free School District / 15,305 |
| 423. | 0.2% | Greenburgh Central School District / 20,966 |
| 423. | 0.2% | Oswego City School District / 33,128 |
| 423. | 0.2% | East Meadow Union Free School District / 51,552 |
| 423. | 0.2% | Amherst Central School District / 23,387 |
| 423. | 0.2% | Brockport Central School District / 27,212 |
| 423. | 0.2% | Beekmantown Central School District / 13,387 |
| 437. | 0.2% | Andes Central School District / 1,112 |
| 437. | 0.2% | Le Roy Central School District / 8,306 |
| 437. | 0.2% | Springville-Griffith Institute Central School District / 12,991 |
| 437. | 0.2% | Livonia Central School District / 10,931 |
| 441. | 0.2% | East Ramapo Central School District / 116,952 |
| 441. | 0.2% | East Greenbush Central School District / 29,761 |
| 441. | 0.2% | St. Regis Falls Central School District / 1,869 |
| 441. | 0.2% | Johnsburg Central School District / 1,907 |
| 441. | 0.2% | Ossining Union Free School District / 34,383 |
| 441. | 0.2% | Hartford Central School District / 2,961 |
| 441. | 0.2% | Moravia Central School District / 7,366 |
| 441. | 0.2% | Gowanda Central School District / 11,199 |
| 449. | 0.2% | Pelham Union Free School District / 12,523 |
| 449. | 0.2% | Rye City School District / 14,872 |
| 449. | 0.2% | Greenport Union Free School District / 4,513 |
| 449. | 0.2% | Bath Central School District / 11,345 |
| 449. | 0.2% | Haldane Central School District / 5,445 |
| 449. | 0.2% | Copenhagen Central School District / 2,916 |
| 449. | 0.2% | White Plains City School District / 57,505 |
| 449. | 0.2% | Edwards-Knox Central School District / 3,122 |
| 457. | 0.2% | East Aurora Union Free School District / 13,010 |
| 457. | 0.2% | Lansingburgh Central School District / 17,198 |
| 457. | 0.2% | Dunkirk City School District / 13,712 |
| 457. | 0.2% | Gilbertsville-Mount Upton Central School District / 3,360 |
| 457. | 0.2% | Port Chester-Rye Union Free School District / 32,326 |
| 457. | 0.2% | Roxbury Central School District / 2,588 |
| 457. | 0.2% | Gloversville City School District / 19,351 |
| 464. | 0.2% | Watertown City School District / 31,679 |
| 464. | 0.2% | Island Trees Union Free School District / 16,159 |
| 464. | 0.2% | Cheektowaga Central School District / 20,832 |
| 464. | 0.2% | Hicksville Union Free School District / 40,447 |
| 464. | 0.2% | Northern Adirondack Central School District / 6,506 |
| 464. | 0.2% | Schuylerville Central School District / 9,916 |
| 464. | 0.2% | Dover Union Free School District / 10,431 |
| 464. | 0.2% | Syracuse City School District / 144,648 |
| 464. | 0.2% | Dundee Central School District / 6,180 |
| 464. | 0.2% | Valley Stream Central High School District / 61,099 |
| 464. | 0.2% | South Jefferson Central School District / 11,436 |
| 464. | 0.2% | New York City Department Of Education / 8,354,889 |
| 464. | 0.2% | North Bellmore Union Free School District / 26,585 |
| 464. | 0.2% | Gananda Central School District / 6,149 |
| 464. | 0.2% | Buffalo City School District / 259,959 |
| 464. | 0.2% | Liverpool Central School District / 50,839 |
| 480. | 0.2% | Madrid-Waddington Central School District / 4,422 |
| 480. | 0.2% | Jordan-Elbridge Central School District / 9,011 |
| 480. | 0.2% | Rochester City School District / 210,461 |
| 480. | 0.2% | Rondout Valley Central School District / 16,560 |
| 480. | 0.2% | Victor Central School District / 23,137 |
| 480. | 0.2% | Niagara Falls City School District / 49,679 |
| 480. | 0.2% | Lyons Central School District / 6,530 |
| 487. | 0.2% | Galway Central School District / 7,354 |
| 487. | 0.2% | Herricks Union Free School District / 24,452 |
| 487. | 0.2% | Valley Central School District / 27,158 |
| 487. | 0.2% | Mechanicville City School District / 9,639 |
| 487. | 0.2% | Hampton Bays Union Free School District / 12,230 |
| 487. | 0.2% | Cattaraugus-Little Valley Central School District / 6,467 |
| 487. | 0.2% | Waverly Central School District / 9,610 |
| 487. | 0.2% | Amityville Union Free School District / 28,168 |
| 487. | 0.2% | Iroquois Central School District / 17,694 |
| 487. | 0.2% | Marlboro Central School District / 12,777 |
| 497. | 0.1% | Saranac Central School District / 13,785 |
| 497. | 0.1% | Rensselaer City School District / 9,700 |
| 497. | 0.1% | Olean City School District / 15,511 |
| 497. | 0.1% | Onondaga Central School District / 6,239 |
| 497. | 0.1% | Cortland City School District / 24,412 |
| 502. | 0.1% | Lyndonville Central School District / 4,672 |
| 502. | 0.1% | Cincinnatus Central School District / 3,590 |
| 502. | 0.1% | Hudson Falls Central School District / 15,670 |
| 502. | 0.1% | Taconic Hills Central School District / 12,112 |
| 502. | 0.1% | Colton-Pierrepont Central School District / 2,628 |
| 502. | 0.1% | Lynbrook Union Free School District / 17,881 |
| 502. | 0.1% | Gilboa-Conesville Central School District / 2,640 |
| 502. | 0.1% | Ogdensburg City School District / 11,237 |
| 502. | 0.1% | Catskill Central School District / 12,417 |
| 502. | 0.1% | Avoca Central School District / 3,574 |
| 512. | 0.1% | New Hyde Park-Garden City Park Union Free School District / 23,437 |
| 512. | 0.1% | Romulus Central School District / 5,593 |
| 512. | 0.1% | Phoenix Central School District / 11,564 |
| 512. | 0.1% | Sherrill City School District / 11,865 |
| 512. | 0.1% | Lowville Academy and Central School District / 8,445 |
| 512. | 0.1% | Newfane Central School District / 10,267 |
| 512. | 0.1% | Cuba-Rushford Central School District / 6,280 |
| 512. | 0.1% | Spencer-Van Etten Central School District / 6,061 |
| 512. | 0.1% | Elmont Union Free School District / 54,636 |
| 512. | 0.1% | General Brown Central School District / 8,905 |
| 522. | 0.1% | West Genesee Central School District / 31,592 |
| 522. | 0.1% | Rome City School District / 38,627 |
| 522. | 0.1% | Akron Central School District / 9,715 |
| 522. | 0.1% | Millbrook Central School District / 7,952 |
| 522. | 0.1% | New Hartford Central School District / 16,802 |
| 522. | 0.1% | Freeport Union Free School District / 40,266 |
| 522. | 0.1% | Palmyra-Macedon Central School District / 12,603 |
| 522. | 0.1% | Williamson Central School District / 6,480 |
| 530. | 0.1% | Oxford Academy and Central School District / 5,289 |
| 530. | 0.1% | Valley Stream Union Free School District 30 / 18,268 |
| 530. | 0.1% | South Orangetown Central School District / 21,614 |
| 530. | 0.1% | Valley Stream Union Free School District 24 / 14,454 |
| 530. | 0.1% | Alden Central School District / 13,622 |
| 530. | 0.1% | Bolivar-Richburg Central School District / 4,294 |
| 530. | 0.1% | Hamburg Central School District / 25,718 |
| 530. | 0.1% | Chautauqua Lake Central School District / 5,712 |
| 530. | 0.1% | Groton Central School District / 5,937 |
| 530. | 0.1% | Morrisville-Eaton Central School District / 6,324 |
| 540. | 0.1% | Marcus Whitman Central School District / 10,031 |
| 540. | 0.1% | Greenwich Central School District / 6,632 |
| 540. | 0.1% | Pocantico Hills Central School District / 4,828 |
| 540. | 0.1% | York Central School District / 5,188 |
| 540. | 0.1% | Cheektowaga-Maryvale Union Free School District / 18,928 |
| 540. | 0.1% | Unadilla Valley Central School District / 5,780 |
| 540. | 0.1% | Mount Vernon City School District / 67,962 |
| 540. | 0.1% | Hoosick Falls Central School District / 8,322 |
| 540. | 0.1% | Silver Creek Central School District / 6,331 |
| 549. | 0.1% | Hoosic Valley Central School District / 7,327 |
| 549. | 0.1% | Indian River Central School District / 21,863 |
| 549. | 0.1% | Watervliet City School District / 11,030 |
| 549. | 0.1% | Poughkeepsie City School District / 30,716 |
| 553. | 0.1% | Harrison Central School District / 27,822 |
| 553. | 0.1% | Clyde-Savannah Central School District / 4,843 |
| 553. | 0.1% | Lackawanna City School District / 18,037 |
| 553. | 0.1% | Naples Central School District / 5,326 |
| 553. | 0.1% | Niagara-Wheatfield Central School District / 27,628 |
| 553. | 0.1% | Marathon Central School District / 4,567 |
| 553. | 0.1% | Briarcliff Manor Union Free School District / 7,951 |
| 553. | 0.1% | Albion Central School District / 15,053 |
| 553. | 0.1% | Uniondale Union Free School District / 42,919 |
| 553. | 0.1% | Utica City School District / 61,852 |
| 553. | 0.1% | Honeoye Central School District / 6,068 |
| 553. | 0.1% | Westhill Central School District / 12,059 |
| 553. | 0.1% | Central Islip Union Free School District / 39,305 |
| 566. | 0.1% | Alexander Central School District / 5,558 |
| 566. | 0.1% | Elmsford Union Free School District / 9,138 |
| 566. | 0.1% | Thousand Islands Central School District / 8,039 |
| 566. | 0.1% | Wheatland-Chili Central School District / 5,953 |
| 566. | 0.1% | Port Byron Central School District / 6,287 |
| 571. | 0.1% | East Williston Union Free School District / 8,483 |
| 571. | 0.1% | Cheektowaga-Sloan Union Free School District / 11,267 |
| 571. | 0.1% | Brentwood Union Free School District / 87,865 |
| 571. | 0.1% | Union Springs Central School District / 6,655 |
| 571. | 0.1% | Batavia City School District / 18,421 |
| 576. | 0.0% | Malone Central School District / 19,738 |
| 576. | 0.0% | Lindenhurst Union Free School District / 41,605 |
| 576. | 0.0% | Dansville Central School District / 10,073 |
| 576. | 0.0% | Phelps-Clifton Springs Central School District / 11,226 |
| 576. | 0.0% | Massena Central School District / 17,351 |
| 576. | 0.0% | Fredonia Central School District / 14,664 |
| 576. | 0.0% | Ticonderoga Central School District / 5,789 |
| 583. | 0.0% | Alfred-Almond Central School District / 7,597 |
| 583. | 0.0% | Seneca Falls Central School District / 9,852 |
| 583. | 0.0% | Jamestown City School District / 32,254 |
| 583. | 0.0% | East Syracuse-Minoa Central School District / 21,844 |
| 583. | 0.0% | Hempstead Union Free School District / 44,273 |
| 583. | 0.0% | Pembroke Central School District / 6,914 |
| 589. | 0.0% | Carthage Central School District / 19,300 |
Please note that we only rank locations with 'Czech as First Ancestry Population Percentage' data. The rank above might not be a complete list. Locations without 'Czech as First Ancestry Population Percentage' data are not listed.
