# Counties in Wisconsin by median age on 1 July (US county estimates), 2025

All 72 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `median_age_pep`
- Unit: years
- Definition: Age that divides the resident population of a US county into two halves of equal size on 1 July, from Census Bureau population estimates calculated by single year of age.
- Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage (https://www.census.gov/programs-surveys/popest/data/data-sets.html)
- Publisher page: https://invokely.ai/en/publishers/us-census-bureau
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/median-age-july-1-us-counties/wisconsin-counties

| Rank | Place | years |
|---:|---|---:|
| 1 | Vilas County | 58.8 |
| 2 | Florence County | 58.2 |
| 3 | Iron County | 57.8 |
| 4 | Burnett County | 57.5 |
| 5 | Adams County | 56.1 |
| 6 | Bayfield County | 55.9 |
| 6 | Door County | 55.9 |
| 8 | Oneida County | 54.6 |
| 9 | Price County | 54.4 |
| 9 | Sawyer County | 54.4 |
| 11 | Washburn County | 54.3 |
| 12 | Marquette County | 50.6 |
| 13 | Waushara County | 50.5 |
| 14 | Forest County | 50 |
| 15 | Langlade County | 49.9 |
| 15 | Rusk County | 49.9 |
| 17 | Marinette County | 49.4 |
| 18 | Lincoln County | 49.3 |
| 19 | Oconto County | 48.1 |
| 20 | Polk County | 47.5 |
| 21 | Buffalo County | 47 |
| 21 | Juneau County | 47 |
| 23 | Crawford County | 46.7 |
| 24 | Pepin County | 46.6 |
| 25 | Green Lake County | 46.5 |
| 26 | Waupaca County | 46.1 |
| 27 | Barron County | 46 |
| 28 | Richland County | 45.9 |
| 29 | Manitowoc County | 45.6 |
| 30 | Shawano County | 45.4 |
| 31 | Kewaunee County | 45.2 |
| 32 | Iowa County | 45.1 |
| 33 | Washington County | 45 |
| 34 | Green County | 44.9 |
| 35 | Ozaukee County | 44.8 |
| 36 | Jackson County | 44.4 |
| 36 | Wood County | 44.4 |
| 38 | Taylor County | 44.3 |
| 38 | Waukesha County | 44.3 |
| 40 | Columbia County | 43.9 |
| 40 | Dodge County | 43.9 |
| 42 | Ashland County | 43.7 |
| 43 | Douglas County | 43.4 |
| 44 | Walworth County | 43.1 |
| 45 | Sheboygan County | 42.9 |
| 46 | Calumet County | 42.8 |
| 46 | Chippewa County | 42.8 |
| 48 | Vernon County | 42.6 |
| 49 | Fond du Lac County | 42.5 |
| 49 | Sauk County | 42.5 |
| 51 | Jefferson County | 42.4 |
| 52 | Marathon County | 42.1 |
| 53 | St. Croix County | 41.5 |
| 54 | Racine County | 41.4 |
| 55 | Trempealeau County | 40.9 |
| 56 | Rock County | 40.8 |
| 57 | Lafayette County | 40.6 |
| 58 | Monroe County | 40.4 |
| 59 | Kenosha County | 40.1 |
| 60 | Outagamie County | 39.8 |
| 60 | Winnebago County | 39.8 |
| 62 | Pierce County | 39.5 |
| 62 | Portage County | 39.5 |
| 64 | Brown County | 39.1 |
| 65 | La Crosse County | 38.4 |
| 66 | Grant County | 37.4 |
| 67 | Clark County | 37.1 |
| 68 | Dunn County | 37 |
| 69 | Eau Claire County | 36.7 |
| 70 | Dane County | 36.6 |
| 71 | Milwaukee County | 35.9 |
| 72 | Menominee County | 35.2 |