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 2016, at 55.3 years. Pulaski County had the lowest, at 27 years. The median was 41.3 years. Source: the U.S. Census Bureau.

Highest55.3Hickory County
Lowest27Pulaski County
Median41.3115 counties

Top 40 counties, 2016

Hickory County: 55.3 yearsHickory County55.3Benton County: 53.3 yearsBenton County53.3Stone County: 53.1 yearsStone County53.1Ozark County: 50.9 yearsOzark County50.9Camden County: 50.6 yearsCamden County50.6St. Clair County: 49.2 yearsSt. Clair County49.2Wayne County: 48 yearsWayne County48Worth County: 47.4 yearsWorth County47.4Dade County: 47.3 yearsDade County47.3Douglas County: 47.2 yearsDouglas County47.2Oregon County: 46.9 yearsOregon County46.9Morgan County: 46.8 yearsMorgan County46.8Holt County: 46.7 yearsHolt County46.7Atchison County: 46.6 yearsAtchison County46.6Shannon County: 46.5 yearsShannon County46.5Chariton County: 46.3 yearsChariton County46.3Gasconade County: 46.3 yearsGasconade County46.3Putnam County: 46.3 yearsPutnam County46.3Iron County: 45.6 yearsIron County45.6Reynolds County: 45.5 yearsReynolds County45.5Monroe County: 45.2 yearsMonroe County45.2Knox County: 45 yearsKnox County45Dent County: 44.9 yearsDent County44.9Maries County: 44.9 yearsMaries County44.9Montgomery County: 44.7 yearsMontgomery County44.7Henry County: 44.5 yearsHenry County44.5Ralls County: 44.5 yearsRalls County44.5Bollinger County: 44.4 yearsBollinger County44.4Cedar County: 44.2 yearsCedar County44.2Mercer County: 44.1 yearsMercer County44.1Ste. Genevieve County: 44 yearsSte. Genevieve County44Carroll County: 43.9 yearsCarroll County43.9Carter County: 43.9 yearsCarter County43.9Dallas County: 43.7 yearsDallas County43.7Barry County: 43.4 yearsBarry County43.4Macon County: 43.4 yearsMacon County43.4Harrison County: 43.1 yearsHarrison County43.1Ripley County: 43.1 yearsRipley County43.1Clark County: 43 yearsClark County43Linn County: 43 yearsLinn County43
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

RankCounties2016
years		Change on 2015
1Hickory County55.3-0.3
2Benton County53.3+0.4
3Stone County53.1+0.5
4Ozark County50.9+0.6
5Camden County50.6+0.1
6St. Clair County49.2-0.2
7Wayne County48+0.9
8Worth County47.4+0.1
9Dade County47.3-0.1
10Douglas County47.2-0.4
11Oregon County46.9+0.4
12Morgan County46.8-0.1
13Holt County46.7-0.3
14Atchison County46.6+0.4
15Shannon County46.5+1
16Chariton County46.3+0.4
16Gasconade County46.3+0.2
16Putnam County46.30
19Iron County45.6+0.4
20Reynolds County45.5-0.2
21Monroe County45.20
22Knox County45+0.1
23Dent County44.9+0.7
23Maries County44.9+0.5
25Montgomery County44.7+0.3
26Henry County44.5+0.3
26Ralls County44.5-0.1
28Bollinger County44.4+0.5
29Cedar County44.2-0.3
30Mercer County44.1+0.8
31Ste. Genevieve County44+0.3
32Carroll County43.9+0.1
32Carter County43.9+0.8
34Dallas County43.70
35Barry County43.4+0.2
35Macon County43.4+0.1
37Harrison County43.1+0.3
37Ripley County43.10
39Clark County43+0.2
39Linn County43+0.2
41Caldwell County42.90
42Crawford County42.7+0.4
43Texas County42.5-0.3
44Shelby County42.4-0.2
45Lafayette County42.3+0.2
45Ray County42.3+0.1
47Clinton County42.2+0.4
47Sullivan County42.2+0.3
49Bates County42.1-0.1
49Stoddard County42.1+0.3
51New Madrid County41.7+0.4
52Miller County41.50
52Wright County41.5-0.1
54Madison County41.4-0.1
54Taney County41.40
54Washington County41.4+0.2
57Andrew County41.3-0.2
57Livingston County41.3-0.2
59DeKalb County41.2+0.4
59Howell County41.2+0.1
61Barton County41-0.2
61Daviess County41+0.3
61Gentry County41-0.3
61Schuyler County41+0.6
65Franklin County40.90
66Mississippi County40.8+0.4
66Osage County40.8+0.2
68Perry County40.70
68Warren County40.7+0.3
70Laclede County40.6+0.2
71St. Louis County40.4+0.1
72Butler County40.2-0.2
73Lawrence County40.1-0.1
74Dunklin County40+0.2
75Grundy County39.9-0.8
75Marion County39.9+0.1
75Newton County39.9+0.1
75Pike County39.9-0.1
79Scott County39.8+0.3
80Randolph County39.7+0.3
81Cass County39.6+0.1
81Vernon County39.6-0.3
83Cooper County39.3-0.1
83Jefferson County39.3+0.3
83Polk County39.3+0.4
83St. Francois County39.3+0.2
87Cole County38.9+0.3
88Audrain County38.8+0.2
88Lewis County38.8-0.3
90Howard County38.7+0.1
91Callaway County38.60
92Pemiscot County38.1+0.3
92St. Charles County38.1+0.2
94Moniteau County38-0.1
94Platte County38-0.2
96Buchanan County37.7+0.2
96McDonald County37.7-0.1
98Christian County37.5+0.3
98Pettis County37.5+0.2
98Webster County37.5-0.3
101Lincoln County37.2+0.2
102Clay County37+0.1
102Saline County37-0.1
104Cape Girardeau County36.7+0.2
105Jackson County36.5+0.1
106Greene County36.2+0.3
106Scotland County36.2-1.2
108Jasper County35.6+0.1
109Phelps County35+0.2
110St. Louis city34.8+0.1
111Nodaway County31.5+0.4
112Johnson County30.8+0.2
113Boone County30.7+0.3
114Adair County29.7+0.4
115Pulaski County27+0.2

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), 2016) [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), 2016. 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=2016. 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), 2016. 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=2016.

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), 2016 [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=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_missouri_by_2016,
  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), 2016}},
  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=2016. 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), 2016
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=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2016.
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 55.3 years in 2016, according to the U.S. Census Bureau.

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

Pulaski County, with 27 years in 2016.

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