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

All 92 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/indiana-counties

| Rank | Place | years |
|---:|---|---:|
| 1 | Brown County | 52.3 |
| 2 | Ohio County | 47.6 |
| 3 | Crawford County | 46.2 |
| 4 | Owen County | 45 |
| 4 | Warren County | 45 |
| 6 | Tipton County | 44.3 |
| 7 | Posey County | 44.2 |
| 7 | Union County | 44.2 |
| 9 | Wabash County | 44.1 |
| 10 | Pulaski County | 44 |
| 10 | Spencer County | 44 |
| 12 | Franklin County | 43.9 |
| 13 | Blackford County | 43.8 |
| 13 | Steuben County | 43.8 |
| 13 | Vermillion County | 43.8 |
| 16 | Carroll County | 43.7 |
| 16 | Starke County | 43.7 |
| 18 | Dearborn County | 43.5 |
| 18 | Newton County | 43.5 |
| 20 | Greene County | 43.3 |
| 20 | Lawrence County | 43.3 |
| 20 | White County | 43.3 |
| 23 | Fayette County | 43.2 |
| 23 | Harrison County | 43.2 |
| 23 | Pike County | 43.2 |
| 26 | Fulton County | 43.1 |
| 26 | Henry County | 43.1 |
| 28 | Martin County | 43 |
| 28 | Randolph County | 43 |
| 30 | Morgan County | 42.9 |
| 31 | Orange County | 42.8 |
| 32 | Clay County | 42.5 |
| 32 | Perry County | 42.5 |
| 34 | Washington County | 42.4 |
| 35 | Fountain County | 42.2 |
| 35 | Switzerland County | 42.2 |
| 37 | Porter County | 42.1 |
| 37 | Sullivan County | 42.1 |
| 39 | LaPorte County | 42 |
| 39 | Ripley County | 42 |
| 39 | Warrick County | 42 |
| 39 | Whitley County | 42 |
| 43 | Rush County | 41.9 |
| 43 | Shelby County | 41.9 |
| 45 | Jasper County | 41.7 |
| 46 | Dubois County | 41.6 |
| 47 | Jefferson County | 41.4 |
| 48 | Huntington County | 41.3 |
| 49 | Wayne County | 41.2 |
| 50 | Howard County | 41 |
| 50 | Miami County | 41 |
| 52 | Madison County | 40.9 |
| 52 | Wells County | 40.9 |
| 54 | Decatur County | 40.8 |
| 55 | Floyd County | 40.7 |
| 55 | Gibson County | 40.7 |
| 55 | Scott County | 40.7 |
| 58 | Parke County | 40.6 |
| 59 | Marshall County | 40.5 |
| 60 | Jennings County | 40.4 |
| 60 | Lake County | 40.4 |
| 62 | Hancock County | 40.3 |
| 63 | Montgomery County | 40.1 |
| 64 | Knox County | 40 |
| 64 | Kosciusko County | 40 |
| 64 | Putnam County | 40 |
| 67 | Cass County | 39.9 |
| 67 | DeKalb County | 39.9 |
| 69 | Benton County | 39.6 |
| 69 | Jay County | 39.6 |
| 71 | Clark County | 39.5 |
| 72 | Grant County | 39.4 |
| 73 | Hamilton County | 39.3 |
| 73 | Hendricks County | 39.3 |
| 73 | Noble County | 39.3 |
| 76 | Boone County | 39.2 |
| 77 | Jackson County | 38.9 |
| 78 | Vanderburgh County | 38.7 |
| 79 | Bartholomew County | 38.3 |
| 80 | Clinton County | 38.1 |
| 80 | Johnson County | 38.1 |
| 82 | Vigo County | 37.2 |
| 83 | St. Joseph County | 37.1 |
| 84 | Allen County | 36.6 |
| 85 | Elkhart County | 36.5 |
| 86 | Delaware County | 35.7 |
| 87 | Marion County | 35 |
| 88 | Daviess County | 34.9 |
| 89 | Adams County | 34 |
| 90 | LaGrange County | 31.9 |
| 91 | Monroe County | 30.2 |
| 92 | Tippecanoe County | 29.7 |