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 2019, at 56.6 years. Pulaski County had the lowest, at 27.3 years. The median was 41.6 years. Source: the U.S. Census Bureau.

Highest56.6Hickory County
Lowest27.3Pulaski County
Median41.6115 counties

Top 40 counties, 2019

Hickory County: 56.6 yearsHickory County56.6Stone County: 54 yearsStone County54Benton County: 53.5 yearsBenton County53.5Ozark County: 51.7 yearsOzark County51.7Camden County: 51.3 yearsCamden County51.3Wayne County: 49.2 yearsWayne County49.2St. Clair County: 48.9 yearsSt. Clair County48.9Holt County: 47.9 yearsHolt County47.9Oregon County: 47.9 yearsOregon County47.9Shannon County: 47.9 yearsShannon County47.9Douglas County: 47.7 yearsDouglas County47.7Dade County: 47.5 yearsDade County47.5Worth County: 47 yearsWorth County47Atchison County: 46.4 yearsAtchison County46.4Putnam County: 46.4 yearsPutnam County46.4Reynolds County: 46.4 yearsReynolds County46.4Gasconade County: 46.2 yearsGasconade County46.2Carter County: 46.1 yearsCarter County46.1Monroe County: 46.1 yearsMonroe County46.1Morgan County: 46 yearsMorgan County46Chariton County: 45.9 yearsChariton County45.9Maries County: 45.6 yearsMaries County45.6Iron County: 45.5 yearsIron County45.5Bollinger County: 45.4 yearsBollinger County45.4Ralls County: 45 yearsRalls County45Dent County: 44.9 yearsDent County44.9Henry County: 44.8 yearsHenry County44.8Knox County: 44.7 yearsKnox County44.7Montgomery County: 44.6 yearsMontgomery County44.6Ripley County: 44.6 yearsRipley County44.6Carroll County: 44.3 yearsCarroll County44.3Ste. Genevieve County: 43.8 yearsSte. Genevieve County43.8Macon County: 43.7 yearsMacon County43.7Cedar County: 43.6 yearsCedar County43.6Caldwell County: 43.4 yearsCaldwell County43.4Crawford County: 43.4 yearsCrawford County43.4Clark County: 43.3 yearsClark County43.3Barry County: 43.1 yearsBarry County43.1Dallas County: 43.1 yearsDallas County43.1Harrison County: 43.1 yearsHarrison County43.1
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

RankCounties2019
years		Change on 2018
1Hickory County56.6+0.6
2Stone County54+0.3
3Benton County53.50
4Ozark County51.7+0.2
5Camden County51.3+0.2
6Wayne County49.2+0.9
7St. Clair County48.9+0.3
8Holt County47.9+0.2
8Oregon County47.9+0.3
8Shannon County47.9+0.7
11Douglas County47.7+0.6
12Dade County47.5-0.3
13Worth County47+0.2
14Atchison County46.4-0.3
14Putnam County46.4-0.7
14Reynolds County46.40
17Gasconade County46.2-0.2
18Carter County46.1+0.8
18Monroe County46.1+0.2
20Morgan County460
21Chariton County45.9-0.4
22Maries County45.6+0.3
23Iron County45.5+0.2
24Bollinger County45.4+0.3
25Ralls County45+0.1
26Dent County44.90
27Henry County44.80
28Knox County44.7-0.3
29Montgomery County44.6-0.5
29Ripley County44.6+0.2
31Carroll County44.3+0.1
32Ste. Genevieve County43.80
33Macon County43.7+0.2
34Cedar County43.6-0.2
35Caldwell County43.4+0.3
35Crawford County43.40
37Clark County43.3+0.5
38Barry County43.10
38Dallas County43.1-0.2
38Harrison County43.1-0.1
38Mercer County43.1-0.6
38Texas County43.1+0.1
43Linn County43+0.3
44Sullivan County42.9+0.2
45New Madrid County42.4+0.2
46Bates County42.3+0.5
46Clinton County42.3+0.2
46DeKalb County42.3+0.9
46Shelby County42.3+0.4
46Stoddard County42.3+0.3
51Mississippi County42.2+0.3
51Ray County42.2-0.1
53Taney County42.1+0.4
53Washington County42.1+0.4
55Lafayette County41.9-0.2
55Madison County41.9+0.4
55Perry County41.9+0.5
58Franklin County41.6+0.3
58Howell County41.6+0.3
60Miller County41.50
61Barton County41.3+0.1
62Andrew County41.1-0.1
62Livingston County41.1-0.1
62Osage County41.1+0.3
65Daviess County40.90
65Dunklin County40.9+0.3
65Warren County40.9-0.2
68Laclede County40.7+0.1
68Wright County40.7-0.2
70Grundy County40.6+0.5
70Pike County40.6+0.7
72Newton County40.5+0.1
72St. Louis County40.5+0.1
74Butler County40.3+0.1
75Schuyler County40.2-0.4
76Cass County40.1+0.2
76Gentry County40.1-0.1
76Jefferson County40.1+0.3
76Randolph County40.1-0.1
76Scott County40.1+0.2
81Cooper County40+0.2
81Lawrence County400
81St. Francois County40+0.2
84Marion County39.9+0.2
84Vernon County39.9+0.1
86Audrain County39.7+0.4
86Cole County39.7+0.3
88Callaway County39.4+0.4
88Lewis County39.4+0.5
90Pemiscot County39.3+0.3
90Polk County39.3+0.3
92St. Charles County39.1+0.4
93Buchanan County38.9+0.5
94Howard County38.5+0.5
94Moniteau County38.5+0.6
96Platte County38.2+0.3
97Christian County38+0.2
97Pettis County38+0.2
99McDonald County37.8+0.3
100Webster County37.5+0.1
101Cape Girardeau County37.3+0.2
102Clay County37.2+0.1
102Lincoln County37.2-0.1
104Saline County36.90
105Greene County36.7+0.2
105Jackson County36.7+0.1
107Jasper County36+0.2
108Scotland County35.9+0.3
109Phelps County35.8+0.2
110St. Louis city35.4+0.1
111Nodaway County33.3+0.4
112Johnson County32+0.3
113Boone County31.6+0.3
114Adair County30.5+0.1
115Pulaski County27.30

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), 2019) [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), 2019. 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=2019. 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), 2019. 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=2019.

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), 2019 [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=2019 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_missouri_by_2019,
  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), 2019}},
  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=2019. 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), 2019
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=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2019.
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 56.6 years in 2019, according to the U.S. Census Bureau.

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

Pulaski County, with 27.3 years in 2019.

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