# Counties in Missouri by median age, 2024

All 115 values come from U.S. Census Bureau for 2024, so the places are comparable.

- Indicator id: `median_age`
- Unit: years
- Definition: Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.
- Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population (https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat)
- Retrieved: 2026-10-08
- Citation: U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-08.
- Web page: https://invokely.ai/rankings/median-age/missouri-counties
- CSV: https://invokely.ai/download/rankings/median-age/missouri-counties.csv

| Rank | Place | years |
|---:|---|---:|
| 1 | Hickory County | 55.2 |
| 2 | Stone County | 54.6 |
| 3 | Benton County | 54.5 |
| 4 | Camden County | 53.2 |
| 5 | Ozark County | 51.4 |
| 6 | Wayne County | 48.6 |
| 7 | Worth County | 48.5 |
| 8 | Holt County | 47.4 |
| 9 | Dade County | 47 |
| 10 | Gasconade County | 46.8 |
| 11 | Atchison County | 46.7 |
| 12 | Reynolds County | 46.1 |
| 12 | St. Clair County | 46.1 |
| 14 | Putnam County | 45.9 |
| 14 | Ralls County | 45.9 |
| 16 | Monroe County | 45.7 |
| 17 | Douglas County | 45.5 |
| 18 | Morgan County | 45.4 |
| 19 | Maries County | 44.9 |
| 19 | Shannon County | 44.9 |
| 21 | Iron County | 44.8 |
| 22 | Chariton County | 44.7 |
| 23 | Bollinger County | 44.5 |
| 23 | Oregon County | 44.5 |
| 25 | Sullivan County | 44.1 |
| 26 | Henry County | 43.7 |
| 27 | Carroll County | 43.6 |
| 27 | Montgomery County | 43.6 |
| 29 | Clark County | 43.5 |
| 29 | Dent County | 43.5 |
| 29 | Macon County | 43.5 |
| 32 | Barry County | 43.4 |
| 33 | Ste. Genevieve County | 43.3 |
| 34 | Caldwell County | 43.2 |
| 35 | Cedar County | 43 |
| 35 | Crawford County | 43 |
| 37 | Texas County | 42.9 |
| 38 | Shelby County | 42.7 |
| 39 | Taney County | 42.6 |
| 40 | Andrew County | 42.5 |
| 41 | Mercer County | 42.4 |
| 42 | DeKalb County | 42.2 |
| 42 | Perry County | 42.2 |
| 44 | Linn County | 42.1 |
| 45 | Clinton County | 42 |
| 45 | Stoddard County | 42 |
| 47 | Ray County | 41.9 |
| 47 | Vernon County | 41.9 |
| 49 | Franklin County | 41.8 |
| 49 | Harrison County | 41.8 |
| 51 | Dallas County | 41.7 |
| 52 | Bates County | 41.4 |
| 53 | Miller County | 41.3 |
| 53 | New Madrid County | 41.3 |
| 55 | Barton County | 41.1 |
| 55 | Madison County | 41.1 |
| 55 | Mississippi County | 41.1 |
| 55 | Osage County | 41.1 |
| 55 | Wright County | 41.1 |
| 60 | Lafayette County | 40.9 |
| 61 | Warren County | 40.8 |
| 62 | Ripley County | 40.7 |
| 62 | Washington County | 40.7 |
| 64 | Grundy County | 40.6 |
| 65 | Cooper County | 40.5 |
| 66 | Cass County | 40.4 |
| 67 | Daviess County | 40.3 |
| 67 | Howell County | 40.3 |
| 67 | Jefferson County | 40.3 |
| 67 | St. Louis County | 40.3 |
| 71 | Audrain County | 40.2 |
| 71 | Gentry County | 40.2 |
| 71 | Newton County | 40.2 |
| 74 | Knox County | 40.1 |
| 75 | Randolph County | 40 |
| 76 | Cole County | 39.9 |
| 77 | Livingston County | 39.8 |
| 77 | St. Charles County | 39.8 |
| 79 | Dunklin County | 39.7 |
| 79 | Scott County | 39.7 |
| 81 | Marion County | 39.6 |
| 81 | Pike County | 39.6 |
| 83 | Butler County | 39.5 |
| 83 | St. Francois County | 39.5 |
| 85 | Callaway County | 39.4 |
| 86 | Christian County | 39.2 |
| 86 | Laclede County | 39.2 |
| 86 | Schuyler County | 39.2 |
| 89 | Platte County | 39.1 |
| 90 | Howard County | 39 |
| 91 | Buchanan County | 38.9 |
| 91 | Carter County | 38.9 |
| 93 | Lawrence County | 38.8 |
| 94 | Moniteau County | 38.4 |
| 95 | McDonald County | 38.2 |
| 95 | Pettis County | 38.2 |
| 97 | Pemiscot County | 38.1 |
| 97 | Polk County | 38.1 |
| 99 | Clay County | 37.9 |
| 100 | Lewis County | 37.6 |
| 101 | Lincoln County | 37.5 |
| 102 | Cape Girardeau County | 37.1 |
| 103 | Jackson County | 37 |
| 103 | Webster County | 37 |
| 105 | Jasper County | 36.8 |
| 105 | St. Louis city | 36.8 |
| 107 | Scotland County | 36.5 |
| 108 | Greene County | 36.4 |
| 109 | Phelps County | 35.8 |
| 110 | Saline County | 35.3 |
| 111 | Nodaway County | 33.7 |
| 112 | Boone County | 32.7 |
| 113 | Johnson County | 31.5 |
| 114 | Adair County | 30.2 |
| 115 | Pulaski County | 27.8 |