| Rank | Median Age ▲ | School District / Population |
| 1. | 16.50 | Norris School District / 72 |
| 2. | 22.80 | Platteville School District / 13,315 |
| 3. | 23.60 | Whitewater School District / 19,776 |
| 4. | 26.80 | Menomonie Area School District / 25,867 |
| 5. | 29.10 | River Falls School District / 22,217 |
| 6. | 30.00 | Madison Metropolitan School District / 222,718 |
| 7. | 30.60 | Eau Claire Area School District / 80,629 |
| 8. | 30.90 | West De Pere School District / 18,222 |
| 9. | 31.00 | Milwaukee School District / 603,255 |
| 9. | 31.00 | La Crosse School District / 62,285 |
| 11. | 31.20 | Menominee Indian School District / 4,537 |
| 12. | 31.30 | Cashton School District / 3,928 |
| 13. | 31.90 | St. Croix Central School District / 7,459 |
| 14. | 32.30 | Augusta School District / 4,190 |
| 15. | 32.60 | Stevens Point Area School District / 54,916 |
| 16. | 32.80 | Hillsboro School District / 4,582 |
| 17. | 32.90 | Walworth Joint No. 1 School District / 3,984 |
| 18. | 33.10 | Beecher-Dunbar-Pembine School District / 3,180 |
| 18. | 33.10 | Genoa City Joint No. 2 School District / 4,729 |
| 20. | 33.30 | Sun Prairie Area School District / 38,814 |
| 21. | 33.40 | New Richmond School District / 16,258 |
| 22. | 33.50 | Verona Area School District / 35,811 |
| 23. | 33.70 | Beloit School District / 36,593 |
| 24. | 33.80 | Johnson Creek School District / 4,181 |
| 25. | 33.90 | Colby School District / 6,847 |
| 26. | 34.40 | Little Chute Area School District / 8,863 |
| 27. | 34.60 | De Pere Unified School District / 20,008 |
| 28. | 34.70 | Kenosha School District / 125,189 |
| 29. | 34.80 | Loyal School District / 3,868 |
| 30. | 34.90 | Somerset School District / 7,425 |
| 30. | 34.90 | Oshkosh Area School District / 77,270 |
| 32. | 35.10 | Deerfield Community School District / 4,109 |
| 33. | 35.30 | Green Bay Area School District / 134,628 |
| 33. | 35.30 | DeForest Area School District / 19,960 |
| 35. | 35.40 | Owen-Withee School District / 4,357 |
| 35. | 35.40 | Kimberly Area School District / 24,296 |
| 37. | 35.50 | Shorewood School District / 13,267 |
| 38. | 35.60 | Wrightstown Community School District / 6,732 |
| 39. | 35.70 | Cadott Community School District / 4,849 |
| 39. | 35.70 | Hartford Joint No. 1 School District / 16,978 |
| 39. | 35.70 | Holmen School District / 17,600 |
| 39. | 35.70 | Menasha School District / 24,013 |
| 39. | 35.70 | Spencer School District / 4,307 |
| 44. | 35.80 | Freedom Area School District / 8,674 |
| 45. | 35.90 | Howard-Suamico School District / 27,350 |
| 46. | 36.00 | Appleton Area School District / 90,728 |
| 47. | 36.10 | Athens School District / 3,994 |
| 48. | 36.30 | Oak Creek-Franklin School District / 37,649 |
| 49. | 36.40 | West Salem School District / 9,801 |
| 49. | 36.40 | Clayton School District / 1,744 |
| 49. | 36.40 | Fennimore Community School District / 4,827 |
| 52. | 36.50 | Prescott School District / 7,675 |
| 52. | 36.50 | Thorp School District / 4,157 |
| 54. | 36.60 | Milton School District / 18,293 |
| 54. | 36.60 | Hudson School District / 28,419 |
| 54. | 36.60 | Union Grove Joint No. 1 School District / 5,565 |
| 57. | 36.80 | Norwalk-Ontario-Wilton School District / 3,041 |
| 57. | 36.80 | Kaukauna Area School District / 22,200 |
| 57. | 36.80 | Trevor-Wilmot Consolidated School District / 4,067 |
| 57. | 36.80 | D.C. Everest Area School District / 31,024 |
| 57. | 36.80 | Silver Lake Joint No. 1 School District / 4,486 |
| 57. | 36.80 | Evansville Community School District / 9,421 |
| 63. | 36.90 | Sharon Joint No. 11 School District / 1,845 |
| 63. | 36.90 | Watertown School District / 29,914 |
| 65. | 37.00 | Elk Mound Area School District / 4,162 |
| 65. | 37.00 | La Farge School District / 1,908 |
| 65. | 37.00 | Seymour Community School District / 12,925 |
| 68. | 37.10 | Stanley-Boyd Area School District / 7,109 |
| 68. | 37.10 | Colfax School District / 4,681 |
| 68. | 37.10 | Racine School District / 142,809 |
| 71. | 37.20 | Baldwin-Woodville Area School District / 8,073 |
| 71. | 37.20 | Cameron School District / 4,694 |
| 71. | 37.20 | Delavan-Darien School District / 16,410 |
| 74. | 37.30 | Mount Horeb Area School District / 11,326 |
| 75. | 37.40 | Ashland School District / 12,301 |
| 75. | 37.40 | Neenah School District / 41,573 |
| 75. | 37.40 | Greenwood School District / 3,506 |
| 78. | 37.50 | Hortonville School District / 17,935 |
| 78. | 37.50 | Oregon School District / 20,076 |
| 78. | 37.50 | Franklin Public School District / 29,764 |
| 78. | 37.50 | Fond du Lac School District / 50,942 |
| 78. | 37.50 | Granton Area School District / 1,996 |
| 83. | 37.60 | Juda School District / 1,436 |
| 83. | 37.60 | Superior School District / 33,306 |
| 83. | 37.60 | Middleton-Cross Plains School District / 35,906 |
| 83. | 37.60 | Elmwood School District / 2,032 |
| 83. | 37.60 | Bowler School District / 2,331 |
| 88. | 37.70 | Marshall School District / 5,593 |
| 88. | 37.70 | Oostburg School District / 5,817 |
| 88. | 37.70 | Dodgeland School District / 6,090 |
| 88. | 37.70 | Elkhorn Area School District / 16,771 |
| 92. | 37.80 | Port Washington-Saukville School District / 17,400 |
| 92. | 37.80 | Waupun School District / 19,274 |
| 92. | 37.80 | Janesville School District / 63,080 |
| 92. | 37.80 | Barneveld School District / 2,201 |
| 92. | 37.80 | Salem School District / 8,079 |
| 97. | 37.90 | Waukesha School District / 89,815 |
| 97. | 37.90 | Independence School District / 2,498 |
| 97. | 37.90 | Tomah Area School District / 19,171 |
| 97. | 37.90 | Hartland-Lakeside Joint No. 3 School District / 10,958 |
| 97. | 37.90 | Brillion School District / 5,196 |
| 102. | 38.10 | Osceola School District / 9,318 |
| 102. | 38.10 | Stratford School District / 4,843 |
| 102. | 38.10 | Palmyra-Eagle Area School District / 7,191 |
| 102. | 38.10 | Edgar School District / 3,577 |
| 106. | 38.30 | Almond-Bancroft School District / 2,497 |
| 106. | 38.30 | Wauwatosa School District / 45,287 |
| 106. | 38.30 | Sheboygan Area School District / 60,056 |
| 109. | 38.40 | Belleville School District / 5,141 |
| 109. | 38.40 | West Allis School District / 67,023 |
| 109. | 38.40 | Big Foot Union High School District / 9,626 |
| 109. | 38.40 | Glenwood City School District / 3,848 |
| 109. | 38.40 | Onalaska School District / 16,591 |
| 109. | 38.40 | Reedsburg School District / 15,805 |
| 115. | 38.50 | Cedar Grove-Belgium Area School District / 5,587 |
| 116. | 38.60 | Hilbert School District / 2,993 |
| 116. | 38.60 | Waterford Joint No. 1 School District / 13,328 |
| 116. | 38.60 | Blair-Taylor School District / 4,107 |
| 119. | 38.70 | Wilmot Union High School District / 18,832 |
| 119. | 38.70 | Tomorrow River School District / 5,165 |
| 121. | 38.80 | Ashwaubenon School District / 16,738 |
| 121. | 38.80 | Luxemburg-Casco School District / 11,075 |
| 121. | 38.80 | Rosendale-Brandon School District / 5,640 |
| 121. | 38.80 | Shullsburg School District / 2,156 |
| 121. | 38.80 | Belmont Community School District / 2,063 |
| 126. | 38.90 | Baraboo School District / 19,076 |
| 127. | 39.00 | Horicon School District / 5,526 |
| 127. | 39.00 | Lomira School District / 6,384 |
| 127. | 39.00 | Merton Community School District / 5,964 |
| 127. | 39.00 | Waunakee Community School District / 16,833 |
| 131. | 39.10 | Hartford Union High School District / 31,642 |
| 131. | 39.10 | West Bend School District / 49,832 |
| 131. | 39.10 | Waterford Union High School District / 17,890 |
| 131. | 39.10 | Sparta Area School District / 16,504 |
| 135. | 39.20 | Edgerton School District / 11,199 |
| 136. | 39.30 | Boyceville Community School District / 4,619 |
| 136. | 39.30 | Denmark School District / 8,159 |
| 136. | 39.30 | Howards Grove School District / 5,795 |
| 136. | 39.30 | Chippewa Falls Area School District / 31,501 |
| 136. | 39.30 | Clear Lake School District / 3,364 |
| 141. | 39.40 | Burlington Area School District / 23,077 |
| 141. | 39.40 | Spring Valley School District / 3,893 |
| 143. | 39.50 | Wausau School District / 53,797 |
| 143. | 39.50 | Arcadia School District / 4,952 |
| 143. | 39.50 | Kewaskum School District / 13,085 |
| 143. | 39.50 | Lake Geneva-Genoa City Union High School District / 24,606 |
| 143. | 39.50 | Bangor School District / 3,941 |
| 143. | 39.50 | Cambria-Friesland School District / 2,302 |
| 143. | 39.50 | Mineral Point School District / 4,648 |
| 150. | 39.60 | Altoona School District / 8,478 |
| 150. | 39.60 | Shell Lake School District / 3,970 |
| 150. | 39.60 | Black River Falls School District / 11,655 |
| 150. | 39.60 | Hamilton School District / 24,846 |
| 150. | 39.60 | Lena School District / 2,535 |
| 150. | 39.60 | Auburndale School District / 4,650 |
| 150. | 39.60 | Beaver Dam School District / 21,540 |
| 150. | 39.60 | St. Francis School District / 9,709 |
| 158. | 39.70 | Reedsville School District / 4,709 |
| 158. | 39.70 | Mayville School District / 8,290 |
| 158. | 39.70 | New London School District / 15,455 |
| 158. | 39.70 | Paris Joint No. 1 School District / 1,940 |
| 162. | 39.80 | Gilmanton School District / 1,263 |
| 162. | 39.80 | South Milwaukee School District / 21,171 |
| 162. | 39.80 | Westosha Central High School District / 18,593 |
| 162. | 39.80 | New Glarus School District / 4,323 |
| 162. | 39.80 | Brodhead School District / 6,186 |
| 162. | 39.80 | Linn Joint No. 4 School District / 979 |
| 168. | 39.90 | Fall River School District / 2,716 |
| 168. | 39.90 | Mukwonago School District / 27,667 |
| 168. | 39.90 | Monona Grove School District / 16,782 |
| 168. | 39.90 | North Fond du Lac School District / 7,782 |
| 172. | 40.00 | Wheatland Joint No. 1 School District / 4,403 |
| 172. | 40.00 | Twin Lakes No. 4 School District / 3,382 |
| 172. | 40.00 | Germantown School District / 24,870 |
| 172. | 40.00 | Pulaski Community School District / 19,517 |
| 172. | 40.00 | Jefferson School District / 13,042 |
| 177. | 40.10 | Pardeeville Area School District / 6,506 |
| 177. | 40.10 | Flambeau School District / 3,630 |
| 177. | 40.10 | Wittenberg-Birnamwood School District / 7,362 |
| 177. | 40.10 | Oconto School District / 7,553 |
| 177. | 40.10 | Shiocton School District / 4,203 |
| 182. | 40.20 | Portage Community School District / 16,775 |
| 182. | 40.20 | Sheboygan Falls School District / 11,681 |
| 182. | 40.20 | Plymouth School District / 16,867 |
| 182. | 40.20 | Ithaca School District / 1,897 |
| 182. | 40.20 | Mosinee School District / 11,944 |
| 182. | 40.20 | Prairie du Chien Area School District / 8,390 |
| 182. | 40.20 | St. Croix Falls School District / 6,620 |
| 182. | 40.20 | Gillett School District / 4,176 |
| 182. | 40.20 | Clintonville School District / 10,215 |
| 182. | 40.20 | Arrowhead Union High School District / 32,481 |
| 192. | 40.30 | Clinton Community School District / 5,978 |
| 192. | 40.30 | Cudahy School District / 18,742 |
| 192. | 40.30 | Medford Area School District / 13,417 |
| 192. | 40.30 | Bonduel School District / 6,670 |
| 192. | 40.30 | Whitefish Bay School District / 13,683 |
| 192. | 40.30 | Fort Atkinson School District / 17,804 |
| 192. | 40.30 | Dodgeville School District / 8,053 |
| 192. | 40.30 | Whitehall School District / 5,034 |
| 192. | 40.30 | Lodi School District / 9,127 |
| 201. | 40.40 | Highland School District / 1,789 |
| 201. | 40.40 | Swallow School District / 2,952 |
| 201. | 40.40 | Abbotsford School District / 2,906 |
| 204. | 40.50 | Melrose-Mindoro School District / 4,034 |
| 204. | 40.50 | Southwestern Wisconsin School District / 4,124 |
| 204. | 40.50 | Norway Joint No. 7 School District / 1,966 |
| 204. | 40.50 | Wauzeka-Steuben School District / 1,668 |
| 204. | 40.50 | Bloomer School District / 6,956 |
| 204. | 40.50 | Boscobel Area School District / 5,579 |
| 210. | 40.60 | Ellsworth Community School District / 11,125 |
| 210. | 40.60 | Lake Geneva Joint No. 1 School District / 17,731 |
| 210. | 40.60 | Randall Joint No. 1 School District / 5,179 |
| 210. | 40.60 | Mondovi School District / 5,599 |
| 210. | 40.60 | Random Lake School District / 6,368 |
| 215. | 40.70 | Durand School District / 7,514 |
| 215. | 40.70 | Eleva-Strum School District / 3,881 |
| 215. | 40.70 | Markesan School District / 6,145 |
| 215. | 40.70 | Wonewoc-Union Center School District / 3,314 |
| 215. | 40.70 | Ripon Area School District / 10,200 |
| 215. | 40.70 | Valders Area School District / 6,841 |
| 221. | 40.80 | Fall Creek School District / 4,048 |
| 221. | 40.80 | Oconto Falls School District / 10,745 |
| 221. | 40.80 | Waterloo School District / 5,411 |
| 221. | 40.80 | Poynette School District / 6,436 |
| 221. | 40.80 | Merrill Area School District / 20,897 |
| 221. | 40.80 | Royall School District / 5,105 |
| 227. | 40.90 | Iowa-Grant School District / 3,850 |
| 227. | 40.90 | Hustisford School District / 3,341 |
| 227. | 40.90 | Westby Area School District / 7,212 |
| 227. | 40.90 | Chilton School District / 6,704 |
| 227. | 40.90 | Name N/A / 211,431 |
| 227. | 40.90 | Sauk Prairie School District / 14,428 |
| 233. | 41.00 | McFarland School District / 10,141 |
| 233. | 41.00 | Oconomowoc Area School District / 30,951 |
| 233. | 41.00 | Marathon City School District / 4,705 |
| 233. | 41.00 | Washington-Caldwell School District / 1,750 |
| 233. | 41.00 | Wautoma Area School District / 11,367 |
| 233. | 41.00 | Northern Ozaukee School District / 5,646 |
| 239. | 41.10 | Lake Mills Area School District / 8,595 |
| 239. | 41.10 | East Troy Community School District / 11,354 |
| 239. | 41.10 | Marshfield School District / 27,670 |
| 242. | 41.20 | Manawa School District / 4,971 |
| 242. | 41.20 | Bristol No. 1 School District / 4,606 |
| 244. | 41.30 | Brown Deer School District / 11,974 |
| 244. | 41.30 | Stoughton Area School District / 21,171 |
| 246. | 41.40 | Herman No. 22 School District / 1,721 |
| 246. | 41.40 | Omro School District / 7,512 |
| 246. | 41.40 | Plum City School District / 1,612 |
| 246. | 41.40 | Whitnall School District / 17,854 |
| 250. | 41.50 | Columbus School District / 7,741 |
| 250. | 41.50 | Bayfield School District / 2,387 |
| 250. | 41.50 | Muskego-Norway School District / 27,887 |
| 250. | 41.50 | Seneca School District / 1,908 |
| 250. | 41.50 | Wisconsin Heights School District / 5,851 |
| 250. | 41.50 | Lac du Flambeau No. 1 School District / 3,128 |
| 256. | 41.60 | Osseo-Fairchild School District / 5,457 |
| 256. | 41.60 | Lake Country School District / 4,857 |
| 256. | 41.60 | Kiel Area School District / 8,152 |
| 259. | 41.70 | Manitowoc School District / 39,531 |
| 259. | 41.70 | River Valley School District / 9,384 |
| 259. | 41.70 | Union Grove Union High School District / 13,539 |
| 259. | 41.70 | Monticello School District / 2,387 |
| 259. | 41.70 | Oakfield School District / 3,345 |
| 259. | 41.70 | Kohler School District / 2,171 |
| 259. | 41.70 | Stockbridge School District / 2,043 |
| 266. | 41.80 | Mauston School District / 10,598 |
| 266. | 41.80 | Randolph School District / 3,087 |
| 266. | 41.80 | Richmond School District / 2,426 |
| 269. | 41.90 | Grafton School District / 12,980 |
| 269. | 41.90 | Parkview School District / 6,046 |
| 269. | 41.90 | Mishicot School District / 6,106 |
| 269. | 41.90 | Maple School District / 7,700 |
| 269. | 41.90 | Cornell School District / 2,814 |
| 269. | 41.90 | Alma Center School District / 3,040 |
| 275. | 42.00 | Menomonee Falls School District / 27,330 |
| 276. | 42.10 | Ladysmith-Hawkins School District / 5,858 |
| 276. | 42.10 | Rio Community School District / 2,903 |
| 276. | 42.10 | New Holstein School District / 8,782 |
| 276. | 42.10 | Monroe School District / 15,457 |
| 280. | 42.20 | Erin School District / 2,790 |
| 280. | 42.20 | North Lake School District / 2,685 |
| 280. | 42.20 | Beloit Turner School District / 8,280 |
| 283. | 42.30 | Pittsville School District / 3,901 |
| 283. | 42.30 | Richland School District / 10,993 |
| 283. | 42.30 | Slinger School District / 15,261 |
| 283. | 42.30 | Niagara School District / 2,550 |
| 283. | 42.30 | Tri-County Area School District / 4,179 |
| 283. | 42.30 | Cedarburg School District / 19,545 |
| 289. | 42.40 | Gresham School District / 1,814 |
| 289. | 42.40 | Barron Area School District / 8,763 |
| 291. | 42.50 | Rubicon Joint No. 6 School District / 1,091 |
| 291. | 42.50 | Kewaunee School District / 6,720 |
| 291. | 42.50 | Campbellsport School District / 10,825 |
| 294. | 42.60 | New Auburn School District / 1,658 |
| 294. | 42.60 | Antigo School District / 17,688 |
| 294. | 42.60 | Port Edwards School District / 3,843 |
| 294. | 42.60 | Pewaukee School District / 16,744 |
| 298. | 42.70 | Wisconsin Rapids School District / 34,403 |
| 298. | 42.70 | Raymond No. 14 School District / 3,153 |
| 298. | 42.70 | Galesville-Ettrick-Trempealeau School District / 8,143 |
| 298. | 42.70 | North Cape School District / 846 |
| 298. | 42.70 | Albany School District / 2,837 |
| 303. | 42.80 | Wisconsin Dells School District / 11,803 |
| 303. | 42.80 | Cuba City School District / 4,650 |
| 303. | 42.80 | Solon Springs School District / 2,430 |
| 303. | 42.80 | Rice Lake Area School District / 16,259 |
| 307. | 42.90 | Potosi School District / 2,264 |
| 307. | 42.90 | Fox Point Joint No. 2 School District / 11,201 |
| 307. | 42.90 | Kettle Moraine School District / 24,340 |
| 310. | 43.00 | Richfield Joint No. 1 School District / 4,433 |
| 310. | 43.00 | Cumberland School District / 6,162 |
| 310. | 43.00 | Brighton No. 1 School District / 1,311 |
| 313. | 43.10 | Marion School District / 3,724 |
| 313. | 43.10 | Darlington Community School District / 4,514 |
| 313. | 43.10 | Benton School District / 1,567 |
| 316. | 43.20 | Berlin Area School District / 10,100 |
| 316. | 43.20 | Amery School District / 9,598 |
| 316. | 43.20 | Unity School District / 7,056 |
| 316. | 43.20 | New Berlin School District / 34,820 |
| 320. | 43.30 | Viroqua Area School District / 8,682 |
| 320. | 43.30 | Algoma School District / 5,193 |
| 320. | 43.30 | Coleman School District / 4,866 |
| 323. | 43.40 | Marinette School District / 15,224 |
| 323. | 43.40 | Name N/A / 1,410 |
| 323. | 43.40 | Yorkville Joint No. 2 School District / 2,959 |
| 323. | 43.40 | Neosho Joint No. 3 School District / 2,039 |
| 323. | 43.40 | Sturgeon Bay School District / 8,632 |
| 328. | 43.50 | Lancaster Community School District / 6,080 |
| 328. | 43.50 | Pecatonica Area School District / 2,568 |
| 330. | 43.60 | Gilman School District / 2,988 |
| 330. | 43.60 | Friess Lake School District / 2,590 |
| 330. | 43.60 | Greenfield School District / 27,694 |
| 330. | 43.60 | Elkhart Lake-Glenbeulah School District / 3,754 |
| 334. | 43.70 | Siren School District / 3,033 |
| 335. | 43.80 | Riverdale School District / 4,868 |
| 335. | 43.80 | Rosholt School District / 3,877 |
| 337. | 44.00 | Iola-Scandinavia School District / 4,757 |
| 337. | 44.00 | Hayward Community School District / 13,592 |
| 339. | 44.10 | Shawano School District / 17,132 |
| 340. | 44.20 | Black Hawk School District / 2,554 |
| 340. | 44.20 | Southern Door County School District / 8,156 |
| 340. | 44.20 | Prairie Farm School District / 1,616 |
| 340. | 44.20 | New Lisbon School District / 4,069 |
| 340. | 44.20 | Cassville School District / 2,147 |
| 340. | 44.20 | Fontana Joint No. 8 School District / 2,758 |
| 340. | 44.20 | Weston School District / 2,161 |
| 347. | 44.30 | Neillsville School District / 6,650 |
| 347. | 44.30 | Waupaca School District / 15,916 |
| 347. | 44.30 | Weyauwega-Fremont School District / 6,996 |
| 347. | 44.30 | Rib Lake School District / 2,541 |
| 351. | 44.40 | Butternut School District / 1,262 |
| 351. | 44.40 | Luck School District / 3,802 |
| 351. | 44.40 | Rhinelander School District / 19,952 |
| 354. | 44.50 | Turtle Lake School District / 3,417 |
| 355. | 44.60 | Prentice School District / 2,913 |
| 355. | 44.60 | Mellen School District / 2,055 |
| 355. | 44.60 | Necedah Area School District / 4,742 |
| 355. | 44.60 | Tigerton School District / 1,775 |
| 359. | 44.70 | Grantsburg School District / 5,121 |
| 359. | 44.70 | Elmbrook School District / 45,922 |
| 359. | 44.70 | Cambridge School District / 5,814 |
| 362. | 44.80 | Argyle School District / 1,877 |
| 363. | 44.90 | Nicolet Union High School District / 25,951 |
| 363. | 44.90 | North Crawford School District / 3,070 |
| 365. | 45.00 | Two Rivers School District / 12,901 |
| 366. | 45.10 | Crandon School District / 5,897 |
| 366. | 45.10 | Cochrane-Fountain City School District / 4,477 |
| 366. | 45.10 | Maple Dale-Indian Hill School District / 2,008 |
| 366. | 45.10 | Chetek School District / 7,003 |
| 370. | 45.20 | River Ridge School District / 3,446 |
| 371. | 45.30 | Princeton School District / 3,320 |
| 371. | 45.30 | Linn Joint No. 6 School District / 1,039 |
| 373. | 45.40 | Stone Bank School District / 2,639 |
| 373. | 45.40 | Adams-Friendship Area School District / 13,952 |
| 375. | 45.50 | Westfield School District / 9,151 |
| 375. | 45.50 | Kickapoo Area School District / 2,682 |
| 377. | 45.70 | Hurley School District / 4,156 |
| 377. | 45.70 | Greendale School District / 14,028 |
| 377. | 45.70 | Winneconne Community School District / 9,018 |
| 377. | 45.70 | Frederic School District / 3,954 |
| 381. | 45.80 | Mequon-Thiensville School District / 26,600 |
| 382. | 46.00 | Peshtigo School District / 6,317 |
| 383. | 46.10 | Bruce School District / 3,669 |
| 384. | 46.20 | Washburn School District / 4,322 |
| 385. | 46.60 | Glendale-River Hills School District / 12,742 |
| 385. | 46.60 | Nekoosa School District / 8,855 |
| 387. | 46.70 | Alma School District / 1,679 |
| 388. | 46.80 | Woodruff Joint No. 1 School District / 5,140 |
| 389. | 46.90 | Three Lakes School District / 4,710 |
| 390. | 47.00 | Geneva Joint No. 4 School District / 1,167 |
| 391. | 47.10 | Pepin Area School District / 2,083 |
| 391. | 47.10 | Dover No. 1 School District / 1,834 |
| 393. | 47.30 | Florence School District / 4,721 |
| 394. | 47.40 | Tomahawk School District / 10,708 |
| 395. | 47.50 | Lake Holcombe School District / 2,511 |
| 395. | 47.50 | Montello School District / 5,900 |
| 397. | 47.80 | Williams Bay School District / 3,058 |
| 397. | 47.80 | Phillips School District / 6,242 |
| 399. | 47.90 | Wausaukee School District / 4,490 |
| 400. | 48.10 | Name N/A / 5,655 |
| 401. | 48.40 | Goodman-Armstrong School District / 1,011 |
| 402. | 48.50 | Birchwood School District / 2,024 |
| 403. | 48.60 | Wild Rose School District / 4,981 |
| 404. | 48.70 | Laona School District / 1,512 |
| 405. | 49.00 | Northwood School District / 3,432 |
| 405. | 49.00 | Winter School District / 2,996 |
| 407. | 49.10 | Spooner Area School District / 10,403 |
| 408. | 49.30 | De Soto Area School District / 4,230 |
| 409. | 49.50 | Phelps School District / 1,391 |
| 410. | 49.90 | Northland Pines School District / 11,597 |
| 411. | 50.10 | White Lake School District / 1,430 |
| 412. | 50.20 | South Shore School District / 1,687 |
| 413. | 50.30 | Crivitz School District / 6,083 |
| 414. | 50.40 | Wabeno Area School District / 3,971 |
| 415. | 50.50 | Drummond Area School District / 4,370 |
| 415. | 50.50 | Suring School District / 3,887 |
| 417. | 50.60 | Weyerhaeuser Area School District / 1,224 |
| 418. | 50.90 | Green Lake School District / 2,908 |
| 419. | 51.00 | Lakeland Union High School District / 18,271 |
| 420. | 51.10 | Webster School District / 5,843 |
| 421. | 51.20 | Sevastopol School District / 4,846 |
| 422. | 52.30 | Mercer School District / 1,818 |
| 422. | 52.30 | Elcho School District / 3,491 |
| 424. | 54.20 | Minocqua Joint No. 1 School District / 7,276 |
| 425. | 55.90 | Gibraltar Area School District / 5,529 |
| 426. | 56.70 | Washington School District / 738 |
| 427. | 59.50 | North Lakeland School District / 2,727 |
Please note that we only rank locations with 'Median Age' data. The rank above might not be a complete list. Locations without 'Median Age' 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.
