| Rank | Portuguese as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 1.9% | Virginia Community Unit School District 64 / 2,389 |
| 2. | 1.6% | Waverly Community Unit School District 6 / 1,720 |
| 3. | 1.6% | Jacksonville School District 117 / 29,109 |
| 4. | 1.5% | Greenfield Community Unit School District 10 / 2,913 |
| 5. | 1.4% | Community Unit School District 16 / 5,490 |
| 6. | 1.4% | Wallace Community Consolidated School District 195 / 2,572 |
| 7. | 1.3% | Spring Lake Community Consolidated School District 606 / 775 |
| 8. | 1.3% | Hardin County Community Unit School District 1 / 4,402 |
| 9. | 1.2% | Winchester Community Unit School District 1 / 3,798 |
| 10. | 1.0% | Marshall Community Unit School District 2C / 8,346 |
| 11. | 1.0% | Triopia Community Unit School District 27 / 2,329 |
| 12. | 1.0% | Selmaville Community Consolidated School District 10 / 2,079 |
| 13. | 0.9% | North Chicago School District 187 / 31,655 |
| 13. | 0.9% | Carlinville Community Unit School District 1 / 9,101 |
| 15. | 0.9% | Cowden-Herrick Community Unit School District 3A / 2,424 |
| 16. | 0.9% | Shelbyville Community Unit School District 4 / 7,669 |
| 17. | 0.9% | Riverton Community Unit School District 14 / 8,128 |
| 17. | 0.9% | Coal City Community Unit School District 1 / 11,258 |
| 19. | 0.9% | Northwestern Community Unit School District 2 / 2,622 |
| 20. | 0.8% | Bradley School District 61 / 12,367 |
| 21. | 0.8% | Oglesby Elementary School District 125 / 4,625 |
| 22. | 0.8% | Franklin Community Unit School District 1 / 1,791 |
| 23. | 0.8% | Kings Consolidated School District 144 / 1,060 |
| 24. | 0.7% | Pleasant Plains Community Unit School District 8 / 7,778 |
| 24. | 0.7% | Bradford Community Unit School District 1 / 1,752 |
| 26. | 0.7% | Miller Township Community Consolidated School District / 2,298 |
| 27. | 0.7% | Williamsville Community Unit School District 15 / 7,209 |
| 28. | 0.7% | Cambridge Community Unit School District 227 / 3,100 |
| 29. | 0.7% | De Soto Consolidated School District 86 / 1,860 |
| 30. | 0.6% | Wesclin Community Unit School District 3 / 7,908 |
| 31. | 0.6% | Hillside School District 93 / 5,047 |
| 32. | 0.6% | Metamora Community Consolidated School District 1 / 6,271 |
| 32. | 0.6% | Creve Coeur School District 76 / 5,909 |
| 34. | 0.6% | Gower School District 62 / 9,559 |
| 35. | 0.6% | Byron Community Unit School District 226 / 7,580 |
| 35. | 0.6% | Coulterville Unit School District 1 / 1,738 |
| 37. | 0.5% | Greenview Community Unit School District 200 / 1,687 |
| 38. | 0.5% | Fremont School District 79 / 17,415 |
| 39. | 0.5% | Pleasantdale School District 107 / 8,200 |
| 40. | 0.5% | Dixon Unit School District 170 / 22,961 |
| 40. | 0.5% | Sterling Community Unit District 5 / 21,736 |
| 42. | 0.5% | LaSalle Elementary School District 122 / 9,271 |
| 42. | 0.5% | Ball-Chatham Community Unit School District 5 / 26,074 |
| 44. | 0.4% | Sandwich Community Unit School District 430 / 14,462 |
| 45. | 0.4% | Herrin Community Unit School District 4 / 16,062 |
| 46. | 0.4% | Triad Community Unit School District 2 / 20,518 |
| 47. | 0.4% | Glencoe School District 35 / 8,430 |
| 48. | 0.4% | Sangamon Valley Community Unit School District 9 / 4,022 |
| 48. | 0.4% | Steger School District 194 / 13,309 |
| 50. | 0.4% | Chester-East Lincoln Community Csd 61 / 3,298 |
| 51. | 0.3% | Pope County Community Unit School District 1 / 4,426 |
| 51. | 0.3% | Du Quoin Community Unit School District 300 / 9,484 |
| 53. | 0.3% | Milford Township High School District 233 / 3,802 |
| 53. | 0.3% | St. Anne Consolidated Community School District 256 / 2,769 |
| 53. | 0.3% | Ludlow Community Consolidated School District 142 / 1,109 |
| 53. | 0.3% | Jersey Community Unit School District 100 / 20,346 |
| 53. | 0.3% | Milford Community Consolidated School District 280 / 3,802 |
| 58. | 0.3% | Cicero School District 99 / 83,332 |
| 58. | 0.3% | Mattoon Community Unit School District 2 / 22,709 |
| 58. | 0.3% | Pawnee Community Unit School District 11 / 3,144 |
| 58. | 0.3% | Tuscola Community Unit School District 301 / 5,749 |
| 62. | 0.3% | Springfield School District 186 / 113,448 |
| 62. | 0.3% | O'Fallon Community Consolidated School District 90 / 26,811 |
| 62. | 0.3% | Galesburg Community Unit School District 205 / 35,351 |
| 62. | 0.3% | Hoopeston Area Community Unit School District 11 / 7,280 |
| 62. | 0.3% | Carterville Community Unit School District 5 / 10,959 |
| 67. | 0.3% | East Prairie School District 73 / 4,227 |
| 67. | 0.3% | East Peoria Community High School District 309 / 26,308 |
| 67. | 0.3% | Virden Community Unit School District 4 / 5,020 |
| 70. | 0.3% | LaSalle-Peru Township High School District 120 / 29,191 |
| 70. | 0.3% | Huntley Consolidated School District 158 / 39,083 |
| 70. | 0.3% | Metamora Township High School District 122 / 15,545 |
| 73. | 0.3% | Elmhurst School District 205 / 46,303 |
| 73. | 0.3% | Morrisonville Community Unit School District 1 / 1,815 |
| 73. | 0.3% | Saratoga Community Consolidated School District 60C / 5,754 |
| 73. | 0.3% | Illini Central Community Unit School District 189 / 5,118 |
| 73. | 0.3% | Beardstown Community Unit School District 15 / 7,865 |
| 73. | 0.3% | Geneva Community Unit School District 304 / 28,498 |
| 73. | 0.3% | Wood River-Hartford Elementary School District 15 / 6,306 |
| 73. | 0.3% | Lake Bluff Elementary School District 65 / 7,946 |
| 81. | 0.2% | Valmeyer Community Unit School District 3 / 2,938 |
| 81. | 0.2% | Cary Community Consolidated School District 26 / 22,076 |
| 81. | 0.2% | McHenry Community Consolidated School District 15 / 42,090 |
| 81. | 0.2% | Homewood School District 153 / 15,669 |
| 81. | 0.2% | Itasca School District 10 / 8,983 |
| 81. | 0.2% | Bradley-Bourbonnais Consolidated High School District 307 / 38,851 |
| 81. | 0.2% | Adlai E. Stevenson High School District 125 / 61,457 |
| 81. | 0.2% | Mount Olive Community Unit School District 5 / 3,543 |
| 81. | 0.2% | Antioch Community Consolidated School District 34 / 22,199 |
| 81. | 0.2% | Porta Community Unit School District 202 / 6,840 |
| 81. | 0.2% | Warrensburg-Latham Community Unit District 11 / 6,374 |
| 92. | 0.2% | Gurnee School District 56 / 17,153 |
| 92. | 0.2% | Eldorado Community Unit School District 4 / 7,364 |
| 92. | 0.2% | Niles Elementary School District 71 / 7,765 |
| 92. | 0.2% | Lisle Community Unit School District 202 / 13,379 |
| 92. | 0.2% | Georgetown-Ridge Farm Consolidated Unit School District 4 / 6,831 |
| 92. | 0.2% | McHenry Community High School District 156 / 45,205 |
| 98. | 0.2% | Riley Community Consolidated School District 18 / 3,489 |
| 98. | 0.2% | North Boone Community Unit School District 200 / 8,299 |
| 98. | 0.2% | West Central Community Unit School District 235 / 6,536 |
| 98. | 0.2% | Gavin School District 37 / 7,405 |
| 98. | 0.2% | Darien School District 61 / 15,935 |
| 103. | 0.2% | Auburn Community Unit School District 10 / 6,921 |
| 103. | 0.2% | Dunlap Community Unit School District 323 / 19,107 |
| 103. | 0.2% | St. Joseph Community Consolidated School District 169 / 5,887 |
| 103. | 0.2% | Scott-Morgan Consolidated Unit School District 2 / 1,593 |
| 103. | 0.2% | St. Anne Community High School District 302 / 4,606 |
| 103. | 0.2% | Spoon River Valley Community Unit School District 4 / 2,187 |
| 103. | 0.2% | Paxton-Buckley-Loda Community Unit School District 10 / 8,694 |
| 103. | 0.2% | A-C Central Community Unit School District 262 / 2,747 |
| 111. | 0.2% | Forest Park School District 91 / 14,282 |
| 111. | 0.2% | O'Fallon Township High School District 203 / 37,866 |
| 111. | 0.2% | Winthrop Harbor School District 1 / 6,638 |
| 111. | 0.2% | Schuyler-Industry Community Unit School District 5 / 7,986 |
| 111. | 0.2% | Troy Community Consolidated School District 30C / 36,322 |
| 111. | 0.2% | Hinsdale Community Consolidated School District 181 / 25,590 |
| 111. | 0.2% | Danville Community Consolidated School District 118 / 40,476 |
| 118. | 0.2% | Rondout School District 72 / 1,645 |
| 118. | 0.2% | Stark County Community Unit School District 100 / 4,935 |
| 118. | 0.2% | Warren Township High School District 121 / 67,701 |
| 118. | 0.2% | Gillespie Community Unit School District 7 / 7,990 |
| 118. | 0.2% | Hinsdale Township High School District 86 / 74,746 |
| 118. | 0.2% | Harvard Community Unit School District 50 / 13,421 |
| 124. | 0.2% | Palos Community Consolidated School District 118 / 22,984 |
| 124. | 0.2% | East Peoria School District 86 / 18,734 |
| 124. | 0.2% | Herscher Community Unit School District 2 / 10,616 |
| 124. | 0.2% | Alden-Hebron School District 19 / 2,888 |
| 124. | 0.2% | Palatine Community Consolidated School District 15 / 117,475 |
| 124. | 0.2% | Woodland Community Consolidated School District 50 / 51,177 |
| 124. | 0.2% | Community Unit School District 4 / 4,160 |
| 131. | 0.2% | Villa Park School District 45 / 35,059 |
| 131. | 0.2% | Arlington Heights School District 25 / 49,788 |
| 131. | 0.2% | Diamond Lake School District 76 / 8,598 |
| 131. | 0.2% | Benjamin School District 25 / 6,237 |
| 131. | 0.2% | Northbrook School District 28 / 13,508 |
| 131. | 0.2% | Libertyville School District 70 / 18,897 |
| 131. | 0.2% | Ottawa Township High School District 140 / 31,903 |
| 131. | 0.2% | Monticello Community Unit School District 25 / 8,871 |
| 131. | 0.2% | Havana Community Unit School District 126 / 6,532 |
| 140. | 0.2% | Gallatin Community Unit School District 7 / 5,582 |
| 140. | 0.2% | Altamont Community Unit School District 10 / 4,969 |
| 140. | 0.2% | Dakota Community Unit School District 201 / 4,419 |
| 140. | 0.2% | DeKalb Community Unit School District 428 / 51,421 |
| 140. | 0.2% | Community Consolidated School District 93 / 34,289 |
| 140. | 0.2% | Rantoul City School District 137 / 12,268 |
| 140. | 0.2% | Rochester Community Unit School District 3A / 10,150 |
| 140. | 0.2% | J. Sterling Morton High School District 201 / 157,034 |
| 140. | 0.2% | Batavia Unit School District 101 / 31,902 |
| 140. | 0.2% | Community Unit School District 300 / 107,834 |
| 140. | 0.2% | Oswego Community Unit School District 308 / 68,241 |
| 151. | 0.2% | River Bend Community Unit District 2 / 6,730 |
| 151. | 0.2% | Lyons Township High School District 204 / 68,205 |
| 151. | 0.2% | North Greene Unit School District 3 / 6,541 |
| 151. | 0.2% | Evanston Community Consolidated School District 65 / 81,872 |
| 151. | 0.2% | Northbrook/Glenview School District 30 / 10,790 |
| 151. | 0.2% | Depue Community Unit School District 103 / 2,199 |
| 151. | 0.2% | Roselle School District 12 / 7,331 |
| 151. | 0.2% | Joliet Township High School District 204 / 129,911 |
| 151. | 0.2% | Evanston Township High School District 202 / 81,872 |
| 151. | 0.2% | Joliet Public School District 86 / 86,698 |
| 151. | 0.2% | Lyons School District 103 / 22,451 |
| 151. | 0.2% | St. Joseph-Ogden Community High School District 305 / 7,927 |
| 151. | 0.2% | McLean County Unit School District 5 / 91,069 |
| 151. | 0.2% | Marquardt School District 15 / 26,435 |
| 165. | 0.1% | Indian Prairie Community Unit School District 204 / 125,546 |
| 165. | 0.1% | Whiteside School District 115 / 12,809 |
| 165. | 0.1% | Salem Community High School District 600 / 15,146 |
| 165. | 0.1% | Collinsville Community Unit School District 10 / 47,733 |
| 165. | 0.1% | Aurora West Unit School District 129 / 77,301 |
| 165. | 0.1% | Naperville Community Unit District 203 / 94,500 |
| 171. | 0.1% | Decatur School District 61 / 72,603 |
| 171. | 0.1% | Bement Community Unit School District 5 / 2,780 |
| 171. | 0.1% | Kildeer Countryside Community Consolidated School District 96 / 23,238 |
| 171. | 0.1% | West Northfield School District 31 / 9,769 |
| 171. | 0.1% | Morris Community High School District 101 / 18,658 |
| 171. | 0.1% | Urbana School District 116 / 50,537 |
| 171. | 0.1% | Community High School District 155 / 95,975 |
| 171. | 0.1% | Rantoul Township High School District 193 / 17,357 |
| 179. | 0.1% | West Chicago School District 33 / 30,575 |
| 179. | 0.1% | Worth School District 127 / 11,083 |
| 179. | 0.1% | Community High School District 94 / 40,762 |
| 179. | 0.1% | Fieldcrest Community Unit School District 6 / 7,397 |
| 179. | 0.1% | Antioch Community High School District 117 / 43,455 |
| 184. | 0.1% | Lake Forest Community High School District 115 / 27,343 |
| 184. | 0.1% | East Alton-Wood River Community High School District 14 / 14,121 |
| 184. | 0.1% | Champaign Community Unit School District 4 / 91,656 |
| 184. | 0.1% | Kenilworth School District 38 / 2,970 |
| 184. | 0.1% | Freeport School District 145 / 30,696 |
| 184. | 0.1% | Township High School District 214 / 250,143 |
| 184. | 0.1% | Rock Island School District 41 / 45,098 |
| 184. | 0.1% | Prairie Grove Community School District 46 / 7,604 |
| 192. | 0.1% | East Dubuque Community Unit School District 119 / 4,325 |
| 192. | 0.1% | Yorkville Community Unit School District 115 / 26,231 |
| 192. | 0.1% | Carrier Mills-Stonefort Community Unit School District / 2,841 |
| 192. | 0.1% | Rockton School District 140 / 11,337 |
| 192. | 0.1% | Quincy School District 172 / 50,932 |
| 192. | 0.1% | Geneseo Community Unit School District 228 / 15,508 |
| 192. | 0.1% | Homewood-Flossmoor Community High School District 233 / 38,387 |
| 192. | 0.1% | West Washington County Community Unit District 10 / 4,147 |
| 192. | 0.1% | Northfield Township High School District 225 / 84,738 |
| 192. | 0.1% | Wauconda Community Unit School District 118 / 26,822 |
| 192. | 0.1% | LaGrange Highlands School District 106 / 8,855 |
| 203. | 0.1% | Centralia School District 135 / 13,771 |
| 203. | 0.1% | Charleston Community Unit School District 1 / 28,363 |
| 203. | 0.1% | Downers Grove Grade School District 58 / 52,817 |
| 203. | 0.1% | ROWVA Community Unit School District 208 / 4,053 |
| 203. | 0.1% | Crystal Lake Community Consolidated School District 47 / 61,959 |
| 203. | 0.1% | Maroa-Forsyth Community Unit School District 2 / 6,762 |
| 203. | 0.1% | Glenview Community Consolidated School District 34 / 39,322 |
| 203. | 0.1% | Bloom Township High School District 206 / 64,197 |
| 203. | 0.1% | West Prairie Community Unit School District 103 / 4,657 |
| 203. | 0.1% | Pekin Public School District108 / 33,703 |
| 203. | 0.1% | Pekin Community High School District 303 / 45,753 |
| 203. | 0.1% | Posen-Robbins Elementary School District 143-5 / 11,656 |
| 203. | 0.1% | Johnston City Community Unit School District 1 / 8,074 |
| 216. | 0.1% | Murphysboro Community Unit School District 186 / 15,300 |
| 216. | 0.1% | Lansing School District 158 / 22,671 |
| 216. | 0.1% | Morris School District 54 / 12,237 |
| 216. | 0.1% | West Lincoln-Broadwell Elementary School District 92 / 5,537 |
| 216. | 0.1% | Oak Park Elementary School District 97 / 51,426 |
| 216. | 0.1% | Edwardsville Community Unit School District 7 / 50,001 |
| 216. | 0.1% | Woodridge School District 68 / 32,135 |
| 223. | 0.1% | DuPage High School District 88 / 81,353 |
| 223. | 0.1% | Community High School District 99 / 108,862 |
| 223. | 0.1% | Lincoln Community High School District 404 / 22,908 |
| 223. | 0.1% | Plainfield School District 202 / 112,788 |
| 223. | 0.1% | Libertyville Community High School District 128 / 50,156 |
| 223. | 0.1% | Oak Park and River Forest District 200 / 62,592 |
| 223. | 0.1% | Calumet Public School District 132 / 11,474 |
| 223. | 0.1% | Peoria School District 150 / 101,590 |
| 223. | 0.1% | Wheeling Community Consolidated School District 21 / 65,346 |
| 223. | 0.1% | Proviso Township High School District 209 / 126,153 |
| 223. | 0.1% | El Paso-Gridley Community Unit School District 11 / 6,677 |
| 223. | 0.1% | LaGrange School District 102 / 25,405 |
| 223. | 0.1% | Mount Prospect School District 57 / 19,645 |
| 223. | 0.1% | Name N/A / 4,750,332 |
| 223. | 0.1% | Barrington Community Unit School District 220 / 44,855 |
| 223. | 0.1% | Franklin Park School District 84 / 10,955 |
| 223. | 0.1% | Bloomington School District 87 / 44,792 |
| 223. | 0.1% | Pontiac Community Consolidated School District 429 / 13,690 |
| 223. | 0.1% | Bensenville School District 2 / 19,485 |
| 242. | 0.1% | Centralia High School District 200 / 21,690 |
| 242. | 0.1% | New Trier Township High School District 203 / 59,234 |
| 242. | 0.1% | Indian Springs School District 109 / 23,923 |
| 242. | 0.1% | Carrollton Community Unit School District 1 / 3,996 |
| 242. | 0.1% | Pontiac Township High School District 90 / 16,352 |
| 242. | 0.1% | Sycamore Community Unit School District 427 / 21,820 |
| 242. | 0.1% | Park Ridge Consolidated Community School District 64 / 40,199 |
| 242. | 0.1% | Lake Park Community High School District 108 / 50,556 |
| 242. | 0.1% | Marengo Community High School District 154 / 13,969 |
| 242. | 0.1% | Belleville School District 118 / 37,204 |
| 242. | 0.1% | Glenbard Township High School District 87 / 164,804 |
| 242. | 0.1% | Macomb Community Unit School District 185 / 22,685 |
| 254. | 0.1% | Woodstock Community Unit School District 200 / 37,718 |
| 254. | 0.1% | Olympia Community Unit School District 16 / 11,910 |
| 254. | 0.1% | Breese School District 12 / 6,993 |
| 254. | 0.1% | Maywood-Melrose Park-Broadview School District 89 / 44,278 |
| 254. | 0.1% | Township High School District 211 / 232,811 |
| 254. | 0.1% | Grant Community High School District 124 / 35,277 |
| 254. | 0.1% | Chicago Public School District 299 / 2,703,477 |
| 254. | 0.1% | Fenton Community High School District 100 / 29,893 |
| 254. | 0.1% | Rockridge Community Unit School District 300 / 7,181 |
| 254. | 0.1% | Carbondale Community High School District 165 / 37,283 |
| 254. | 0.1% | Effingham Community Unit School District 40 / 20,506 |
| 254. | 0.1% | Rochelle Township High School District 212 / 17,552 |
| 254. | 0.1% | Aptakisic-Tripp Community Consolidated School District / 18,334 |
| 254. | 0.1% | Round Lake Community Unit School District 116 / 35,961 |
| 268. | 0.0% | Chicago Heights School District 170 / 24,842 |
| 268. | 0.0% | Belleville Township High School District 201 / 107,228 |
| 268. | 0.0% | Hawthorn Community Consolidated School District 73 / 29,745 |
| 268. | 0.0% | Alton Community Unit School District 11 / 49,040 |
| 268. | 0.0% | Lake Forest School District 67 / 19,190 |
| 268. | 0.0% | Rockford School District 205 / 194,568 |
| 268. | 0.0% | Midwest Central Community Unit School District 191 / 6,860 |
| 268. | 0.0% | Valley View Community Unit School District 365U / 91,548 |
| 268. | 0.0% | Argo Community High School District 217 / 39,269 |
| 268. | 0.0% | Mannheim School District 83 / 21,696 |
| 268. | 0.0% | Galena Unit School District 120 / 5,628 |
| 268. | 0.0% | Tolono Community Unit School District 7 / 9,744 |
| 268. | 0.0% | Highland Community Unit School District 5 / 17,882 |
| 281. | 0.0% | Hononegah Community High School District 207 / 31,142 |
| 281. | 0.0% | Consolidated High School District 230 / 152,081 |
| 281. | 0.0% | Maine Township High School District 207 / 143,019 |
| 281. | 0.0% | Leyden Community High School District 212 / 63,851 |
| 281. | 0.0% | Niles Township Community High School District 219 / 94,155 |
| 281. | 0.0% | Mundelein Consolidated High School District 120 / 41,133 |
| 281. | 0.0% | Kankakee School District 111 / 33,072 |
| 281. | 0.0% | Berwyn South School District 100 / 31,765 |
| 281. | 0.0% | Thornton Fractional Township High School District 215 / 59,426 |
| 281. | 0.0% | Community Unit School District 200 / 78,853 |
| 281. | 0.0% | Zion-Benton Township High School District 126 / 44,495 |
| 281. | 0.0% | East Maine School District 63 / 45,409 |
| 293. | 0.0% | Community High School District 218 / 120,793 |
| 293. | 0.0% | Cumberland Community Unit School District 77 / 6,611 |
| 293. | 0.0% | Bellwood School District 88 / 23,181 |
| 293. | 0.0% | Taylorville Community Unit School District 3 / 18,790 |
| 293. | 0.0% | School District U-46 / 227,274 |
| 293. | 0.0% | Central Community High School District 71 / 15,724 |
| 293. | 0.0% | Granite City Community Unit School District 9 / 44,580 |
| 293. | 0.0% | Lake Zurich Community Unit School District 95 / 31,304 |
| 293. | 0.0% | Carbondale Elementary School District 95 / 27,628 |
| 293. | 0.0% | Aurora East Unit School District 131 / 77,437 |
| 293. | 0.0% | Community Consolidated School District 59 / 65,516 |
| 293. | 0.0% | Homer Community Consolidated School District 33C / 29,362 |
| 293. | 0.0% | Waterloo Community Unit School District 5 / 16,904 |
| 306. | 0.0% | Lockport Township High School District 205 / 74,398 |
| 306. | 0.0% | Schaumburg Community Consolidated School District 54 / 132,253 |
| 306. | 0.0% | Bremen Community High School District 228 / 93,470 |
| 306. | 0.0% | Kaneland Community Unit School District 302 / 25,110 |
| 306. | 0.0% | Belvidere Consolidated Unit School District 100 / 44,786 |
| 306. | 0.0% | Des Plaines Community Consolidated School District 62 / 51,568 |
Please note that we only rank locations with 'Portuguese as First Ancestry Population Percentage' data. The rank above might not be a complete list. Locations without 'Portuguese as First Ancestry Population Percentage' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
