Data / Rankings / Median age / Counties in Missouri

Counties in Missouri by median age

Hickory County had the highest median age of 115 counties in 2021, at 54.8 years. Pulaski County had the lowest, at 28.1 years. The median was 41.1 years and the figure for Missouri was 38.8 years. Source: the U.S. Census Bureau.

Highest54.8Hickory County
Lowest28.1Pulaski County
Median41.1115 counties
Missouri38.8History

Top 40 counties, 2021

CSVChart (SVG)

Hickory CountyHickory County: 54.8 years54.8Stone CountyStone County: 54.2 years54.2Benton CountyBenton County: 53.7 years53.7Camden CountyCamden County: 52.1 years52.1Ozark CountyOzark County: 51.8 years51.8St. Clair CountySt. Clair County: 48.7 years48.7Worth CountyWorth County: 48.6 years48.6Wayne CountyWayne County: 48.2 years48.2Holt CountyHolt County: 48 years48Atchison CountyAtchison County: 47.9 years47.9Douglas CountyDouglas County: 47.2 years47.2Gasconade CountyGasconade County: 47.1 years47.1Dade CountyDade County: 46.4 years46.4Monroe CountyMonroe County: 46.2 years46.2Morgan CountyMorgan County: 46.1 years46.1Reynolds CountyReynolds County: 46.1 years46.1Shannon CountyShannon County: 46.1 years46.1Putnam CountyPutnam County: 46 years46Chariton CountyChariton County: 45.7 years45.7Carter CountyCarter County: 45.6 years45.6Maries CountyMaries County: 45.4 years45.4Bollinger CountyBollinger County: 45.3 years45.3Iron CountyIron County: 45.1 years45.1Ralls CountyRalls County: 45 years45Oregon CountyOregon County: 44.9 years44.9Cedar CountyCedar County: 44.6 years44.6Henry CountyHenry County: 44.4 years44.4Dent CountyDent County: 44.2 years44.2Ste. Genevieve CountySte. Genevieve County: 44.1 years44.1Montgomery CountyMontgomery County: 43.8 years43.8Carroll CountyCarroll County: 43.7 years43.7Knox CountyKnox County: 43.5 years43.5Macon CountyMacon County: 43.5 years43.5Shelby CountyShelby County: 43.3 years43.3Barry CountyBarry County: 43.1 years43.1Clark CountyClark County: 42.8 years42.8Taney CountyTaney County: 42.6 years42.6Texas CountyTexas County: 42.6 years42.6Ray CountyRay County: 42.3 years42.3Caldwell CountyCaldwell County: 42.2 years42.2
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2021
years
1Hickory County54.8
2Stone County54.2
3Benton County53.7
4Camden County52.1
5Ozark County51.8
6St. Clair County48.7
7Worth County48.6
8Wayne County48.2
9Holt County48
10Atchison County47.9
11Douglas County47.2
12Gasconade County47.1
13Dade County46.4
14Monroe County46.2
15Morgan County46.1
15Reynolds County46.1
15Shannon County46.1
18Putnam County46
19Chariton County45.7
20Carter County45.6
21Maries County45.4
22Bollinger County45.3
23Iron County45.1
24Ralls County45
25Oregon County44.9
26Cedar County44.6
27Henry County44.4
28Dent County44.2
29Ste. Genevieve County44.1
30Montgomery County43.8
31Carroll County43.7
32Knox County43.5
32Macon County43.5
34Shelby County43.3
35Barry County43.1
36Clark County42.8
37Taney County42.6
37Texas County42.6
39Ray County42.3
40Caldwell County42.2
41Harrison County42.1
42Crawford County42
43Lafayette County41.9
43Sullivan County41.9
45Dallas County41.8
45Linn County41.8
47New Madrid County41.7
48Ripley County41.5
48Vernon County41.5
50Andrew County41.4
50Madison County41.4
50Warren County41.4
53DeKalb County41.3
53Stoddard County41.3
53Wright County41.3
56Mercer County41.2
57Bates County41.1
57Howell County41.1
57Osage County41.1
60Clinton County41
61Barton County40.9
61Lewis County40.9
61Perry County40.9
64Mississippi County40.8
65Franklin County40.7
66Grundy County40.6
67Butler County40.4
67Daviess County40.4
69Miller County40.3
69St. Louis County40.3
71Washington County40.2
72Audrain County40
73Cass County39.9
73Gentry County39.9
73Jefferson County39.9
73Newton County39.9
77Scott County39.6
78Schuyler County39.5
79Laclede County39.4
80Christian County39.3
80Randolph County39.3
82Callaway County39.2
82Dunklin County39.2
82Marion County39.2
82St. Charles County39.2
86Cole County39.1
86Livingston County39.1
88St. Francois County38.9
89Lawrence County38.8
90Pike County38.7
91Howard County38.5
91Platte County38.5
93Buchanan County38.4
93McDonald County38.4
95Cooper County38.3
96Polk County38.2
97Pemiscot County38
97Pettis County38
99Moniteau County37.6
100Lincoln County37.5
101Clay County37.4
102Jackson County36.9
103Scotland County36.8
104Cape Girardeau County36.7
104Webster County36.7
106Jasper County36.4
107Greene County36.3
107Saline County36.3
107St. Louis city36.3
110Phelps County35.8
111Boone County31.9
112Johnson County30.7
113Nodaway County29.9
114Adair County28.1
114Pulaski County28.1

Other periods

About this ranking

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.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

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/2021/table-based-SF/data/5YRData/acsdt5y2021-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Hickory County, with 54.8 years in 2021, according to the U.S. Census Bureau.

Which county has the lowest median age?

Pulaski County, with 28.1 years in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in Missouri: more rankings