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 2023, at 54.7 years. Pulaski County had the lowest, at 27.9 years. The median was 41.7 years. Source: the U.S. Census Bureau.

Highest54.7Hickory County

Lowest27.9Pulaski County

Median41.7115 counties

Top 40 counties, 2023

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

Rank	Counties	2023 years	Change on 2022
1	Hickory County	54.7	-0.2
2	Stone County	53.9	-0.1
3	Benton County	53.6	+0.1
4	Camden County	52.5	+0.3
5	Ozark County	50.7	+0.2
6	Worth County	48.5	-0.6
7	Wayne County	48.4	-0.2
8	Dade County	47	-0.1
9	Gasconade County	46.9	+0.3
10	St. Clair County	46.7	-0.6
11	Reynolds County	46.5	-0.5
12	Atchison County	46.3	-0.1
12	Ralls County	46.3	0
14	Holt County	46.1	-0.1
15	Monroe County	45.6	-0.4
16	Chariton County	45.5	-0.5
17	Morgan County	45.2	0
18	Shannon County	45.1	-0.7
19	Carroll County	44.9	+0.1
19	Maries County	44.9	+0.1
21	Iron County	44.4	-0.5
21	Montgomery County	44.4	-0.1
23	Dent County	44.3	-0.1
24	Putnam County	44.2	-0.2
25	Bollinger County	44	-0.7
25	Carter County	44	-0.4
25	Henry County	44	+0.2
25	Oregon County	44	-0.7
29	Douglas County	43.9	-1.1
30	Crawford County	43.7	0
31	Ste. Genevieve County	43.6	0
32	Clark County	43.5	+0.4
33	Mercer County	43.4	0
34	Macon County	43.3	+0.2
35	DeKalb County	43	+0.7
35	Taney County	43	+0.3
37	Cedar County	42.9	0
38	Barry County	42.8	-0.4
38	Caldwell County	42.8	-0.4
38	Knox County	42.8	+0.2
41	Perry County	42.7	+0.3
42	Harrison County	42.6	-0.1
42	Linn County	42.6	0
42	Shelby County	42.6	+0.2
45	Texas County	42.5	0
46	Dallas County	42.4	+0.1
46	Madison County	42.4	+0.4
48	Clinton County	42.3	-0.1
48	New Madrid County	42.3	0
48	Sullivan County	42.3	0
51	Franklin County	42.2	+0.3
51	Stoddard County	42.2	-0.1
53	Andrew County	42.1	+0.1
54	Mississippi County	42	-0.2
54	Ray County	42	0
54	Ripley County	42	-0.5
57	Washington County	41.8	-0.1
58	Bates County	41.7	-0.2
59	Lafayette County	41.6	0
60	Barton County	41.5	-0.1
60	Miller County	41.5	+0.4
62	Cooper County	41.4	0
63	Daviess County	41.2	+0.1
63	Howell County	41.2	+0.1
63	Livingston County	41.2	0
66	Osage County	41.1	0
67	Pike County	41	0
68	St. Louis County	40.9	+0.1
68	Warren County	40.9	+0.2
70	Jefferson County	40.8	+0.1
71	Marion County	40.7	+0.3
71	Randolph County	40.7	+0.2
73	Cass County	40.6	+0.2
73	Laclede County	40.6	0
73	St. Francois County	40.6	+0.1
76	Cole County	40.4	+0.2
76	Dunklin County	40.4	0
78	Butler County	40.2	0
79	Callaway County	40.1	+0.2
79	Newton County	40.1	-0.1
79	St. Charles County	40.1	+0.2
82	Lewis County	40	0
82	Schuyler County	40	-0.3
84	Scott County	39.9	0
85	Audrain County	39.8	+0.1
86	Gentry County	39.7	+0.1
86	Howard County	39.7	+0.4
88	Wright County	39.5	0
89	Grundy County	39.4	+0.1
89	Vernon County	39.4	-0.2
91	Buchanan County	39.2	0
92	Lawrence County	39.1	-0.2
92	Platte County	39.1	+0.2
94	Moniteau County	39	0
95	Christian County	38.8	+0.2
96	Pemiscot County	38.7	-0.2
96	Polk County	38.7	+0.1
98	Pettis County	38.1	+0.1
99	Clay County	38	+0.2
100	McDonald County	37.8	0
101	Cape Girardeau County	37.7	+0.3
102	Lincoln County	37.3	+0.1
103	Jackson County	37.2	+0.1
104	Greene County	37.1	+0.1
105	Saline County	36.8	-0.4
105	St. Louis city	36.8	+0.4
107	Jasper County	36.5	+0.1
107	Webster County	36.5	-0.2
109	Scotland County	35.9	-0.2
110	Phelps County	35.7	+0.2
111	Nodaway County	32.9	+0.5
112	Boone County	32.6	+0.3
113	Johnson County	31.7	0
114	Adair County	29.2	-0.3
115	Pulaski County	27.9	+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), 2023) [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), 2023. 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=2023. 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), 2023. 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=2023.

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), 2023 [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=2023 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_missouri_by_2023,
  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), 2023}},
  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=2023. 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), 2023
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=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/missouri-counties?period=2023.
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 54.7 years in 2023, according to the U.S. Census Bureau.

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

Pulaski County, with 27.9 years in 2023.

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.