# Counties in Indiana by population under 18, 2025

All 92 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_0_17_share`
- Unit: %
- Definition: Residents aged 0 to 17 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.
- Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (https://www.census.gov/programs-surveys/popest/data/data-sets.html)
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/population-under-18/indiana-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | LaGrange County | 31.5 |
| 2 | Adams County | 30.7 |
| 3 | Daviess County | 29.5 |
| 4 | Elkhart County | 26 |
| 5 | Jay County | 25.6 |
| 6 | Clinton County | 24.9 |
| 7 | Allen County | 24.7 |
| 8 | Jackson County | 24.7 |
| 9 | Boone County | 24.3 |
| 10 | Noble County | 24.2 |
| 11 | Hamilton County | 24.1 |
| 12 | Hendricks County | 24 |
| 13 | Marion County | 24 |
| 14 | Johnson County | 23.9 |
| 15 | Cass County | 23.8 |
| 16 | Marshall County | 23.6 |
| 17 | Benton County | 23.6 |
| 18 | Wells County | 23.6 |
| 19 | Parke County | 23.5 |
| 20 | DeKalb County | 23.4 |
| 21 | Switzerland County | 23.1 |
| 22 | Ripley County | 23 |
| 23 | Jennings County | 23 |
| 24 | Bartholomew County | 23 |
| 25 | Hancock County | 22.9 |
| 26 | Dubois County | 22.9 |
| 27 | Fountain County | 22.9 |
| 28 | Jasper County | 22.8 |
| 29 | Orange County | 22.8 |
| 30 | Martin County | 22.8 |
| 31 | Gibson County | 22.8 |
| 32 | Warrick County | 22.7 |
| 33 | Decatur County | 22.7 |
| 34 | White County | 22.7 |
| 35 | Fulton County | 22.7 |
| 36 | Montgomery County | 22.6 |
| 37 | Randolph County | 22.6 |
| 38 | St. Joseph County | 22.5 |
| 39 | Kosciusko County | 22.5 |
| 40 | Lake County | 22.4 |
| 41 | Whitley County | 22.3 |
| 42 | Clay County | 22.1 |
| 43 | Washington County | 22.1 |
| 44 | Wayne County | 22 |
| 45 | Rush County | 22 |
| 46 | Shelby County | 22 |
| 47 | Howard County | 22 |
| 48 | Scott County | 21.8 |
| 49 | Harrison County | 21.8 |
| 50 | Pike County | 21.8 |
| 51 | Franklin County | 21.7 |
| 52 | Floyd County | 21.7 |
| 53 | Fayette County | 21.7 |
| 54 | Starke County | 21.7 |
| 55 | Clark County | 21.6 |
| 56 | Pulaski County | 21.6 |
| 57 | Knox County | 21.5 |
| 58 | Greene County | 21.5 |
| 59 | Carroll County | 21.4 |
| 60 | Huntington County | 21.4 |
| 61 | Vanderburgh County | 21.4 |
| 62 | Warren County | 21.3 |
| 63 | Morgan County | 21.3 |
| 64 | Spencer County | 21.3 |
| 65 | Blackford County | 21.3 |
| 66 | Dearborn County | 21.1 |
| 67 | Vermillion County | 21 |
| 68 | Newton County | 21 |
| 69 | Posey County | 21 |
| 70 | Madison County | 20.9 |
| 71 | Miami County | 20.9 |
| 72 | Grant County | 20.9 |
| 73 | Union County | 20.8 |
| 74 | Lawrence County | 20.8 |
| 75 | Wabash County | 20.7 |
| 76 | Tipton County | 20.5 |
| 77 | Jefferson County | 20.4 |
| 78 | LaPorte County | 20.4 |
| 79 | Porter County | 20.4 |
| 80 | Crawford County | 20.2 |
| 81 | Vigo County | 20 |
| 82 | Tippecanoe County | 20 |
| 83 | Sullivan County | 19.9 |
| 84 | Owen County | 19.8 |
| 85 | Steuben County | 19.6 |
| 86 | Henry County | 19.5 |
| 87 | Ohio County | 19.3 |
| 88 | Perry County | 19.3 |
| 89 | Putnam County | 19.2 |
| 90 | Delaware County | 18.9 |
| 91 | Brown County | 16.6 |
| 92 | Monroe County | 15.1 |