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

All 105 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/kansas-counties

| Rank | Place | years |
|---:|---|---:|
| 1 | Elk County | 50.8 |
| 2 | Jewell County | 50.5 |
| 3 | Rush County | 48.8 |
| 4 | Osborne County | 48.6 |
| 4 | Smith County | 48.6 |
| 6 | Decatur County | 48.2 |
| 7 | Greenwood County | 48 |
| 8 | Graham County | 47.5 |
| 9 | Trego County | 47.2 |
| 10 | Ness County | 46.5 |
| 11 | Morris County | 46.3 |
| 12 | Lincoln County | 46 |
| 13 | Republic County | 45.8 |
| 13 | Woodson County | 45.8 |
| 15 | Linn County | 45.7 |
| 16 | Barber County | 45.6 |
| 17 | Phillips County | 45.5 |
| 17 | Rooks County | 45.5 |
| 19 | Cheyenne County | 45.2 |
| 19 | Comanche County | 45.2 |
| 21 | Lane County | 44.9 |
| 21 | Morton County | 44.9 |
| 23 | Jefferson County | 44.7 |
| 24 | Clay County | 44.6 |
| 24 | Russell County | 44.6 |
| 26 | Mitchell County | 44.5 |
| 27 | Chase County | 44.4 |
| 27 | Rawlins County | 44.4 |
| 29 | Chautauqua County | 44.3 |
| 29 | Osage County | 44.3 |
| 29 | Wilson County | 44.3 |
| 32 | Marion County | 44.2 |
| 33 | Coffey County | 44.1 |
| 33 | Ellsworth County | 44.1 |
| 33 | Marshall County | 44.1 |
| 36 | Hodgeman County | 43.8 |
| 36 | Ottawa County | 43.8 |
| 38 | Pawnee County | 43.7 |
| 39 | Clark County | 43.6 |
| 40 | Wabaunsee County | 43.5 |
| 41 | Edwards County | 43.2 |
| 41 | Kingman County | 43.2 |
| 43 | Washington County | 42.6 |
| 44 | Dickinson County | 42.5 |
| 45 | Brown County | 42.4 |
| 46 | Cherokee County | 42.3 |
| 46 | Sumner County | 42.3 |
| 48 | Harper County | 42.2 |
| 48 | Sheridan County | 42.2 |
| 50 | Montgomery County | 41.9 |
| 50 | Stafford County | 41.9 |
| 52 | Miami County | 41.8 |
| 53 | Allen County | 41.6 |
| 54 | Harvey County | 41.4 |
| 55 | Gove County | 41.3 |
| 55 | Reno County | 41.3 |
| 57 | Wallace County | 41.1 |
| 58 | Barton County | 41 |
| 58 | Jackson County | 41 |
| 58 | Norton County | 41 |
| 61 | Doniphan County | 40.9 |
| 62 | Anderson County | 40.8 |
| 62 | Franklin County | 40.8 |
| 64 | Greeley County | 40.7 |
| 65 | McPherson County | 40.6 |
| 65 | Nemaha County | 40.6 |
| 65 | Saline County | 40.6 |
| 65 | Shawnee County | 40.6 |
| 69 | Neosho County | 40.5 |
| 70 | Cloud County | 40.4 |
| 70 | Pratt County | 40.4 |
| 72 | Labette County | 40.3 |
| 73 | Rice County | 40.1 |
| 73 | Wichita County | 40.1 |
| 75 | Johnson County | 39.5 |
| 76 | Kiowa County | 39.4 |
| 76 | Leavenworth County | 39.4 |
| 76 | Scott County | 39.4 |
| 79 | Logan County | 39.3 |
| 80 | Bourbon County | 39.2 |
| 80 | Butler County | 39.2 |
| 80 | Cowley County | 39.2 |
| 83 | Meade County | 39 |
| 84 | Sherman County | 38.6 |
| 85 | Atchison County | 37.4 |
| 85 | Thomas County | 37.4 |
| 87 | Stanton County | 37.3 |
| 88 | Pottawatomie County | 37.2 |
| 89 | Stevens County | 37.1 |
| 90 | Sedgwick County | 36.8 |
| 91 | Gray County | 36.7 |
| 92 | Kearny County | 36.3 |
| 93 | Ellis County | 35.1 |
| 94 | Lyon County | 35 |
| 95 | Haskell County | 34.7 |
| 96 | Wyandotte County | 34.5 |
| 97 | Crawford County | 34.4 |
| 97 | Grant County | 34.4 |
| 99 | Hamilton County | 33.9 |
| 100 | Finney County | 33 |
| 101 | Douglas County | 32.9 |
| 102 | Ford County | 31.9 |
| 103 | Seward County | 30.8 |
| 104 | Geary County | 27.7 |
| 105 | Riley County | 25.6 |