# Counties in Kentucky by population under 18, 2025

All 120 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/kentucky-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Christian County | 27.6 |
| 2 | Todd County | 27.2 |
| 3 | Grant County | 25.9 |
| 4 | Carroll County | 25.7 |
| 5 | Bath County | 25.2 |
| 6 | Nicholas County | 24.9 |
| 7 | Hart County | 24.7 |
| 8 | Whitley County | 24.7 |
| 9 | Boone County | 24.5 |
| 10 | Webster County | 24.4 |
| 11 | Fleming County | 24.2 |
| 12 | Monroe County | 24 |
| 13 | Hardin County | 24 |
| 14 | Barren County | 23.9 |
| 15 | Oldham County | 23.9 |
| 16 | Graves County | 23.9 |
| 17 | Logan County | 23.8 |
| 18 | Butler County | 23.8 |
| 19 | Scott County | 23.8 |
| 20 | Daviess County | 23.7 |
| 21 | Wolfe County | 23.6 |
| 22 | Jessamine County | 23.6 |
| 23 | Gallatin County | 23.6 |
| 24 | Lincoln County | 23.5 |
| 25 | Jackson County | 23.5 |
| 26 | Casey County | 23.4 |
| 27 | Simpson County | 23.4 |
| 28 | Lewis County | 23.4 |
| 29 | Carlisle County | 23.4 |
| 30 | Owsley County | 23.3 |
| 31 | Grayson County | 23.3 |
| 32 | Warren County | 23.2 |
| 33 | Metcalfe County | 23.1 |
| 34 | Taylor County | 23.1 |
| 35 | Washington County | 23 |
| 36 | Allen County | 23 |
| 37 | Montgomery County | 23 |
| 38 | Lawrence County | 22.9 |
| 39 | Harrison County | 22.9 |
| 40 | Knox County | 22.8 |
| 41 | Cumberland County | 22.7 |
| 42 | Henry County | 22.7 |
| 43 | Spencer County | 22.7 |
| 44 | Bracken County | 22.6 |
| 45 | Garrard County | 22.6 |
| 46 | Shelby County | 22.6 |
| 47 | Harlan County | 22.6 |
| 48 | Clinton County | 22.6 |
| 49 | Breckinridge County | 22.6 |
| 50 | Mason County | 22.5 |
| 51 | Russell County | 22.5 |
| 52 | Meade County | 22.4 |
| 53 | Kenton County | 22.4 |
| 54 | Powell County | 22.4 |
| 55 | Bell County | 22.4 |
| 56 | Marion County | 22.3 |
| 57 | Ohio County | 22.2 |
| 58 | McLean County | 22.1 |
| 59 | Owen County | 22.1 |
| 60 | Hopkins County | 22.1 |
| 61 | Trigg County | 22.1 |
| 62 | Nelson County | 22.1 |
| 63 | Caldwell County | 22 |
| 64 | Anderson County | 22 |
| 65 | Hancock County | 22 |
| 66 | McCreary County | 22 |
| 67 | Perry County | 22 |
| 68 | Laurel County | 21.9 |
| 69 | Pendleton County | 21.9 |
| 70 | Larue County | 21.9 |
| 71 | Bourbon County | 21.9 |
| 72 | Henderson County | 21.8 |
| 73 | Carter County | 21.8 |
| 74 | Clark County | 21.8 |
| 75 | Pulaski County | 21.7 |
| 76 | Menifee County | 21.7 |
| 77 | Green County | 21.7 |
| 78 | Jefferson County | 21.6 |
| 79 | Mercer County | 21.5 |
| 80 | Magoffin County | 21.5 |
| 81 | Robertson County | 21.5 |
| 82 | Union County | 21.5 |
| 83 | Breathitt County | 21.4 |
| 84 | Clay County | 21.4 |
| 85 | Trimble County | 21.3 |
| 86 | Crittenden County | 21.3 |
| 87 | Rockcastle County | 21.3 |
| 88 | Bullitt County | 21.2 |
| 89 | Johnson County | 21.2 |
| 90 | Floyd County | 21.2 |
| 91 | Adair County | 21.2 |
| 92 | Woodford County | 21.1 |
| 93 | Letcher County | 21 |
| 94 | Boyd County | 21 |
| 95 | Wayne County | 20.9 |
| 96 | Muhlenberg County | 20.9 |
| 97 | Ballard County | 20.9 |
| 98 | McCracken County | 20.7 |
| 99 | Hickman County | 20.6 |
| 100 | Greenup County | 20.6 |
| 101 | Estill County | 20.5 |
| 102 | Leslie County | 20.5 |
| 103 | Franklin County | 20.4 |
| 104 | Madison County | 20.4 |
| 105 | Boyle County | 20.3 |
| 106 | Fayette County | 20.3 |
| 107 | Campbell County | 19.9 |
| 108 | Fulton County | 19.8 |
| 109 | Pike County | 19.7 |
| 110 | Knott County | 19.6 |
| 111 | Livingston County | 19.5 |
| 112 | Edmonson County | 19.4 |
| 113 | Marshall County | 19.2 |
| 114 | Morgan County | 19 |
| 115 | Rowan County | 18.7 |
| 116 | Martin County | 18.4 |
| 117 | Calloway County | 18.4 |
| 118 | Lee County | 18.2 |
| 119 | Elliott County | 17.3 |
| 120 | Lyon County | 14.1 |