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

All 120 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/kentucky-counties

| Rank | Place | years |
|---:|---|---:|
| 1 | Lyon County | 48.5 |
| 2 | Livingston County | 47.2 |
| 3 | Marshall County | 46.6 |
| 4 | Hickman County | 46.4 |
| 5 | Robertson County | 46.2 |
| 6 | Trigg County | 45.6 |
| 7 | Cumberland County | 45.4 |
| 8 | Ballard County | 45.2 |
| 9 | Green County | 44.5 |
| 10 | Crittenden County | 44.4 |
| 10 | Leslie County | 44.4 |
| 10 | Pike County | 44.4 |
| 13 | Estill County | 44.3 |
| 13 | Greenup County | 44.3 |
| 15 | Wayne County | 44.2 |
| 16 | Edmonson County | 43.9 |
| 16 | Letcher County | 43.9 |
| 16 | Magoffin County | 43.9 |
| 16 | Trimble County | 43.9 |
| 20 | Menifee County | 43.8 |
| 21 | Caldwell County | 43.7 |
| 22 | Elliott County | 43.6 |
| 23 | Breathitt County | 43.5 |
| 23 | Woodford County | 43.5 |
| 25 | Knott County | 43.3 |
| 25 | Rockcastle County | 43.3 |
| 27 | Johnson County | 43.2 |
| 27 | Owsley County | 43.2 |
| 29 | Breckinridge County | 43.1 |
| 29 | McLean County | 43.1 |
| 29 | Russell County | 43.1 |
| 32 | Clinton County | 43 |
| 33 | Floyd County | 42.9 |
| 33 | Mercer County | 42.9 |
| 35 | Boyd County | 42.8 |
| 35 | Hancock County | 42.8 |
| 35 | Lawrence County | 42.8 |
| 35 | Owen County | 42.8 |
| 35 | Pulaski County | 42.8 |
| 40 | Fulton County | 42.7 |
| 40 | Garrard County | 42.7 |
| 40 | Spencer County | 42.7 |
| 43 | Carter County | 42.6 |
| 43 | McCracken County | 42.6 |
| 45 | Bourbon County | 42.5 |
| 45 | Lee County | 42.5 |
| 45 | Metcalfe County | 42.5 |
| 45 | Union County | 42.5 |
| 49 | Mason County | 42.4 |
| 49 | Pendleton County | 42.4 |
| 51 | Bracken County | 42.3 |
| 51 | Henry County | 42.3 |
| 51 | Lewis County | 42.3 |
| 51 | Perry County | 42.3 |
| 55 | Larue County | 42.2 |
| 56 | Muhlenberg County | 42.1 |
| 57 | Harlan County | 42 |
| 58 | Carlisle County | 41.9 |
| 58 | Harrison County | 41.9 |
| 60 | Anderson County | 41.7 |
| 60 | Bullitt County | 41.7 |
| 60 | Casey County | 41.7 |
| 60 | Henderson County | 41.7 |
| 60 | Washington County | 41.7 |
| 60 | Wolfe County | 41.7 |
| 66 | Hopkins County | 41.6 |
| 66 | Jackson County | 41.6 |
| 68 | Monroe County | 41.5 |
| 68 | Ohio County | 41.5 |
| 70 | Lincoln County | 41.4 |
| 71 | Butler County | 41.2 |
| 72 | Franklin County | 41.1 |
| 72 | Oldham County | 41.1 |
| 74 | Clark County | 41 |
| 74 | Grayson County | 41 |
| 74 | Marion County | 41 |
| 77 | Allen County | 40.9 |
| 77 | Laurel County | 40.9 |
| 77 | Morgan County | 40.9 |
| 77 | Powell County | 40.9 |
| 81 | Nelson County | 40.8 |
| 82 | Barren County | 40.7 |
| 82 | Bell County | 40.7 |
| 84 | Clay County | 40.6 |
| 84 | Fleming County | 40.6 |
| 86 | Adair County | 40.5 |
| 86 | Shelby County | 40.5 |
| 88 | Boyle County | 40.4 |
| 88 | Knox County | 40.4 |
| 88 | Martin County | 40.4 |
| 88 | Webster County | 40.4 |
| 92 | Graves County | 40.3 |
| 93 | Logan County | 40.2 |
| 94 | Meade County | 40.1 |
| 95 | Nicholas County | 40 |
| 96 | Montgomery County | 39.9 |
| 97 | Hart County | 39.8 |
| 98 | McCreary County | 39.6 |
| 99 | Campbell County | 39.3 |
| 100 | Bath County | 39.2 |
| 100 | Simpson County | 39.2 |
| 102 | Gallatin County | 39.1 |
| 103 | Daviess County | 39 |
| 104 | Jefferson County | 38.9 |
| 105 | Boone County | 38.4 |
| 105 | Carroll County | 38.4 |
| 105 | Hardin County | 38.4 |
| 108 | Taylor County | 38.2 |
| 109 | Kenton County | 38.1 |
| 110 | Jessamine County | 38 |
| 111 | Grant County | 37.3 |
| 112 | Whitley County | 37.1 |
| 113 | Scott County | 36.7 |
| 114 | Fayette County | 36 |
| 114 | Todd County | 36 |
| 116 | Calloway County | 35.5 |
| 117 | Madison County | 35.1 |
| 118 | Rowan County | 34 |
| 118 | Warren County | 34 |
| 120 | Christian County | 30.3 |