Data / Rankings / Median age on 1 July (US county estimates) / Counties in Missouri

Counties in Missouri by median age on 1 July (US county estimates)

Hickory County had the highest median age on 1 July (US county estimates) of 115 counties in 2024, at 54.3 years. Pulaski County had the lowest, at 28 years. The median was 41.7 years. Source: the U.S. Census Bureau.

Highest54.3Hickory County
Lowest28Pulaski County
Median41.7115 counties

Top 40 counties, 2024

Hickory County: 54.3 yearsHickory County54.3Stone County: 54.2 yearsStone County54.2Benton County: 53.8 yearsBenton County53.8Camden County: 52.7 yearsCamden County52.7Ozark County: 50 yearsOzark County50Worth County: 48.5 yearsWorth County48.5Wayne County: 48.4 yearsWayne County48.4Dade County: 47.1 yearsDade County47.1Reynolds County: 47.1 yearsReynolds County47.1Gasconade County: 46.9 yearsGasconade County46.9Ralls County: 46.7 yearsRalls County46.7Holt County: 45.9 yearsHolt County45.9St. Clair County: 45.9 yearsSt. Clair County45.9Atchison County: 45.7 yearsAtchison County45.7Chariton County: 45.6 yearsChariton County45.6Monroe County: 45.5 yearsMonroe County45.5Morgan County: 45.2 yearsMorgan County45.2Putnam County: 44.9 yearsPutnam County44.9Carroll County: 44.8 yearsCarroll County44.8Maries County: 44.7 yearsMaries County44.7Dent County: 44.4 yearsDent County44.4Montgomery County: 44.4 yearsMontgomery County44.4Henry County: 44.3 yearsHenry County44.3Iron County: 44.3 yearsIron County44.3Shannon County: 44.1 yearsShannon County44.1Ste. Genevieve County: 44.1 yearsSte. Genevieve County44.1Crawford County: 43.8 yearsCrawford County43.8Douglas County: 43.8 yearsDouglas County43.8Mercer County: 43.8 yearsMercer County43.8Oregon County: 43.8 yearsOregon County43.8Bollinger County: 43.5 yearsBollinger County43.5Carter County: 43.5 yearsCarter County43.5Clark County: 43.4 yearsClark County43.4Macon County: 43.4 yearsMacon County43.4DeKalb County: 43 yearsDeKalb County43Taney County: 43 yearsTaney County43Texas County: 42.8 yearsTexas County42.8Perry County: 42.7 yearsPerry County42.7Sullivan County: 42.7 yearsSullivan County42.7Cedar County: 42.6 yearsCedar County42.6
years. 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. Retrieved 2026-10-12.

Full ranking

RankCounties2024
years		Change on 2023
1Hickory County54.3-0.4
2Stone County54.2+0.3
3Benton County53.8+0.2
4Camden County52.7+0.2
5Ozark County50-0.7
6Worth County48.50
7Wayne County48.40
8Dade County47.1+0.1
8Reynolds County47.1+0.6
10Gasconade County46.90
11Ralls County46.7+0.4
12Holt County45.9-0.2
12St. Clair County45.9-0.8
14Atchison County45.7-0.6
15Chariton County45.6+0.1
16Monroe County45.5-0.1
17Morgan County45.20
18Putnam County44.9+0.7
19Carroll County44.8-0.1
20Maries County44.7-0.2
21Dent County44.4+0.1
21Montgomery County44.40
23Henry County44.3+0.3
23Iron County44.3-0.1
25Shannon County44.1-1
25Ste. Genevieve County44.1+0.5
27Crawford County43.8+0.1
27Douglas County43.8-0.1
27Mercer County43.8+0.4
27Oregon County43.8-0.2
31Bollinger County43.5-0.5
31Carter County43.5-0.5
33Clark County43.4-0.1
33Macon County43.4+0.1
35DeKalb County430
35Taney County430
37Texas County42.8+0.3
38Perry County42.70
38Sullivan County42.7+0.4
40Cedar County42.6-0.3
40Dallas County42.6+0.2
40Harrison County42.60
40Madison County42.6+0.2
44Barry County42.5-0.3
44Caldwell County42.5-0.3
46Andrew County42.4+0.3
46Knox County42.4-0.4
48Franklin County42.3+0.1
48Linn County42.3-0.3
48Shelby County42.3-0.3
51Clinton County42.2-0.1
52New Madrid County42.1-0.2
52Ray County42.1+0.1
54Stoddard County42-0.2
55Washington County41.9+0.1
56Miller County41.8+0.3
56Mississippi County41.8-0.2
58Bates County41.70
59Barton County41.6+0.1
59Cooper County41.6+0.2
61Lafayette County41.5-0.1
62Howell County41.4+0.2
62Ripley County41.4-0.6
64Daviess County41.3+0.1
64Osage County41.3+0.2
66Jefferson County41.1+0.3
66Livingston County41.1-0.1
68Pike County410
68St. Louis County41+0.1
68Warren County41+0.1
71Marion County40.70
72Cass County40.60
72Laclede County40.60
72Randolph County40.6-0.1
72St. Francois County40.60
76Cole County40.5+0.1
77Butler County40.3+0.1
77St. Charles County40.3+0.2
79Howard County40+0.3
79Newton County40-0.1
79Scott County40+0.1
82Callaway County39.9-0.2
82Dunklin County39.9-0.5
84Audrain County39.80
85Wright County39.7+0.2
86Gentry County39.6-0.1
86Grundy County39.6+0.2
86Lewis County39.6-0.4
89Platte County39.3+0.2
89Vernon County39.3-0.1
91Buchanan County39.20
91Schuyler County39.2-0.8
93Lawrence County39.10
94Christian County39+0.2
94Pemiscot County39+0.3
96Moniteau County38.9-0.1
97Polk County38.70
98Clay County38.3+0.3
98McDonald County38.3+0.5
100Pettis County38.10
101Cape Girardeau County37.9+0.2
102Lincoln County37.6+0.3
103Greene County37.3+0.2
104Jackson County37.20
105St. Louis city37+0.2
106Saline County36.9+0.1
107Jasper County36.6+0.1
107Webster County36.6+0.1
109Phelps County35.9+0.2
110Scotland County35.8-0.1
111Boone County33+0.4
112Nodaway County32.7-0.2
113Johnson County31.70
114Adair County29.4+0.2
115Pulaski County28+0.1

Other periods

About this ranking

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.

Counties only: the county file has no state or national medians, and medians cannot be added up. A single-year estimate, unlike median_age, which for US places is a five-year American Community Survey estimate.

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. 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.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). 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 (Counties in Missouri by median age on 1 July (US county estimates), 2024) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

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, Counties in Missouri by median age on 1 July (US county estimates), 2024. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2024. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. 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. Counties in Missouri by median age on 1 July (US county estimates), 2024. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2024.

Harvard

U.S. Census Bureau (2026) 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, Counties in Missouri by median age on 1 July (US county estimates), 2024 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2024 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_missouri_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{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: Counties in Missouri by median age on 1 July (US county estimates), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2024. Publisher attribution: 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.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - 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: Counties in Missouri by median age on 1 July (US county estimates), 2024
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2024
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2024.
N1  - Publisher attribution: 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.
ER  -
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Questions

Which county has the highest median age on 1 July (US county estimates)?

Hickory County, with 54.3 years in 2024, according to the U.S. Census Bureau.

Which county has the lowest median age on 1 July (US county estimates)?

Pulaski County, with 28 years in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: 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. Retrieved 2026-10-12.

Median age on 1 July (US county estimates): other rankings

Counties in Missouri: more rankings