# Counties in Kentucky by population aged 18 to 64, 2025

All 120 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_18_64_share`
- Unit: %
- Definition: Residents aged 18 to 64 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 18 to 64 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 18 to 64 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-18-64/kentucky-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Rowan County | 64.9 |
| 2 | Fayette County | 63.6 |
| 3 | Madison County | 63.5 |
| 4 | Martin County | 62.8 |
| 5 | Warren County | 62.5 |
| 6 | Morgan County | 62.3 |
| 7 | Calloway County | 62.1 |
| 8 | Lee County | 61.4 |
| 9 | Scott County | 61.3 |
| 10 | Campbell County | 60.9 |
| 11 | Elliott County | 60.7 |
| 12 | Clay County | 60.5 |
| 13 | Kenton County | 60.3 |
| 14 | McCreary County | 60.1 |
| 15 | Meade County | 60.1 |
| 16 | Bullitt County | 60.1 |
| 17 | Jefferson County | 59.8 |
| 18 | Edmonson County | 59.7 |
| 19 | Franklin County | 59.5 |
| 20 | Lyon County | 59.3 |
| 21 | Spencer County | 59.3 |
| 22 | Powell County | 59.3 |
| 23 | Boone County | 59.2 |
| 24 | Anderson County | 59.2 |
| 25 | Laurel County | 59 |
| 26 | Oldham County | 59 |
| 27 | Gallatin County | 58.9 |
| 28 | Clark County | 58.9 |
| 29 | Hardin County | 58.9 |
| 30 | Montgomery County | 58.7 |
| 31 | Pike County | 58.6 |
| 32 | Shelby County | 58.6 |
| 33 | Nelson County | 58.5 |
| 34 | Boyle County | 58.5 |
| 35 | Adair County | 58.5 |
| 36 | Estill County | 58.4 |
| 37 | Allen County | 58.3 |
| 38 | Floyd County | 58.3 |
| 39 | Breathitt County | 58.2 |
| 40 | Marion County | 58.2 |
| 41 | Jessamine County | 58.2 |
| 42 | Pendleton County | 58.2 |
| 43 | Perry County | 58.1 |
| 44 | Boyd County | 58.1 |
| 45 | Simpson County | 58.1 |
| 46 | Knott County | 58.1 |
| 47 | Christian County | 58.1 |
| 48 | Whitley County | 57.9 |
| 49 | Owen County | 57.9 |
| 50 | Rockcastle County | 57.9 |
| 51 | Bell County | 57.8 |
| 52 | Muhlenberg County | 57.8 |
| 53 | Grant County | 57.8 |
| 54 | Johnson County | 57.8 |
| 55 | Leslie County | 57.7 |
| 56 | Knox County | 57.6 |
| 57 | Wolfe County | 57.6 |
| 58 | Hancock County | 57.4 |
| 59 | Taylor County | 57.4 |
| 60 | Trimble County | 57.3 |
| 61 | Larue County | 57.3 |
| 62 | Lawrence County | 57.2 |
| 63 | Ohio County | 57.2 |
| 64 | Garrard County | 57.2 |
| 65 | Fulton County | 57.1 |
| 66 | Bracken County | 57.1 |
| 67 | Letcher County | 57.1 |
| 68 | Mercer County | 57.1 |
| 69 | Bourbon County | 57.1 |
| 70 | Metcalfe County | 57 |
| 71 | Henderson County | 57 |
| 72 | Harlan County | 56.9 |
| 73 | Hopkins County | 56.9 |
| 74 | Daviess County | 56.9 |
| 75 | Carter County | 56.9 |
| 76 | Nicholas County | 56.9 |
| 77 | Magoffin County | 56.8 |
| 78 | McCracken County | 56.8 |
| 79 | Jackson County | 56.7 |
| 80 | Pulaski County | 56.6 |
| 81 | Union County | 56.6 |
| 82 | Grayson County | 56.5 |
| 83 | Butler County | 56.5 |
| 84 | Logan County | 56.5 |
| 85 | Harrison County | 56.5 |
| 86 | Wayne County | 56.4 |
| 87 | Woodford County | 56.4 |
| 88 | Henry County | 56.4 |
| 89 | Menifee County | 56.4 |
| 90 | Lincoln County | 56.4 |
| 91 | Lewis County | 56.3 |
| 92 | Carroll County | 56.3 |
| 93 | Washington County | 56.2 |
| 94 | Bath County | 56.2 |
| 95 | Greenup County | 56.2 |
| 96 | Fleming County | 56.2 |
| 97 | Barren County | 56.2 |
| 98 | Graves County | 56.1 |
| 99 | Todd County | 55.9 |
| 100 | Hart County | 55.9 |
| 101 | Monroe County | 55.9 |
| 102 | Crittenden County | 55.8 |
| 103 | Breckinridge County | 55.8 |
| 104 | Mason County | 55.8 |
| 105 | Ballard County | 55.8 |
| 106 | Marshall County | 55.8 |
| 107 | Green County | 55.6 |
| 108 | Livingston County | 55.4 |
| 109 | Webster County | 55.4 |
| 110 | McLean County | 55.3 |
| 111 | Casey County | 55.3 |
| 112 | Carlisle County | 55.2 |
| 113 | Russell County | 55 |
| 114 | Clinton County | 54.9 |
| 115 | Owsley County | 54.6 |
| 116 | Robertson County | 54.6 |
| 117 | Caldwell County | 54.2 |
| 118 | Trigg County | 53.1 |
| 119 | Hickman County | 53 |
| 120 | Cumberland County | 51.8 |