Counties in Kansas by median age on 1 July (US county estimates), 2025

Elk County had the highest median age on 1 July (US county estimates) of 105 counties in 2025, at 50.8 years. Riley County had the lowest, at 25.6 years. The median was 41.6 years. Source: the U.S. Census Bureau.

Highest50.8Elk County

Lowest25.6Riley County

Median41.6105 counties

Top 40 counties, 2025

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	2025 years	Change on 2024
1	Elk County	50.8	+0.2
2	Jewell County	50.5	+0.1
3	Rush County	48.8	-0.1
4	Osborne County	48.6	+0.5
4	Smith County	48.6	-0.6
6	Decatur County	48.2	-0.9
7	Greenwood County	48	+0.5
8	Graham County	47.5	-1.4
9	Trego County	47.2	-1.3
10	Ness County	46.5	-2
11	Morris County	46.3	-0.6
12	Lincoln County	46	-0.4
13	Republic County	45.8	-0.3
13	Woodson County	45.8	-0.2
15	Linn County	45.7	0
16	Barber County	45.6	-0.1
17	Phillips County	45.5	+0.1
17	Rooks County	45.5	+0.2
19	Cheyenne County	45.2	+0.3
19	Comanche County	45.2	+0.6
21	Lane County	44.9	-0.5
21	Morton County	44.9	+0.2
23	Jefferson County	44.7	+0.3
24	Clay County	44.6	-0.1
24	Russell County	44.6	+0.1
26	Mitchell County	44.5	+0.4
27	Chase County	44.4	+0.5
27	Rawlins County	44.4	-0.8
29	Chautauqua County	44.3	+0.1
29	Osage County	44.3	+0.2
29	Wilson County	44.3	+0.1
32	Marion County	44.2	-0.1
33	Coffey County	44.1	-0.2
33	Ellsworth County	44.1	+0.1
33	Marshall County	44.1	+0.2
36	Hodgeman County	43.8	+0.5
36	Ottawa County	43.8	+0.5
38	Pawnee County	43.7	+0.3
39	Clark County	43.6	-0.4
40	Wabaunsee County	43.5	+0.6
41	Edwards County	43.2	+0.1
41	Kingman County	43.2	-0.2
43	Washington County	42.6	-0.2
44	Dickinson County	42.5	-0.1
45	Brown County	42.4	-0.2
46	Cherokee County	42.3	+0.1
46	Sumner County	42.3	+0.2
48	Harper County	42.2	-0.1
48	Sheridan County	42.2	+0.2
50	Montgomery County	41.9	+0.1
50	Stafford County	41.9	-1.6
52	Miami County	41.8	+0.2
53	Allen County	41.6	0
54	Harvey County	41.4	0
55	Gove County	41.3	-0.2
55	Reno County	41.3	-0.1
57	Wallace County	41.1	+0.6
58	Barton County	41	+0.3
58	Jackson County	41	+0.1
58	Norton County	41	-0.3
61	Doniphan County	40.9	0
62	Anderson County	40.8	-0.6
62	Franklin County	40.8	+0.3
64	Greeley County	40.7	+0.6
65	McPherson County	40.6	+0.2
65	Nemaha County	40.6	+0.2
65	Saline County	40.6	+0.1
65	Shawnee County	40.6	0
69	Neosho County	40.5	+0.1
70	Cloud County	40.4	-0.7
70	Pratt County	40.4	+0.2
72	Labette County	40.3	-0.3
73	Rice County	40.1	+0.1
73	Wichita County	40.1	-0.4
75	Johnson County	39.5	+0.2
76	Kiowa County	39.4	-0.3
76	Leavenworth County	39.4	+0.3
76	Scott County	39.4	0
79	Logan County	39.3	0
80	Bourbon County	39.2	+0.4
80	Butler County	39.2	+0.3
80	Cowley County	39.2	-0.1
83	Meade County	39	+0.3
84	Sherman County	38.6	-0.2
85	Atchison County	37.4	-0.1
85	Thomas County	37.4	+0.2
87	Stanton County	37.3	-0.1
88	Pottawatomie County	37.2	+0.4
89	Stevens County	37.1	0
90	Sedgwick County	36.8	+0.1
91	Gray County	36.7	+0.3
92	Kearny County	36.3	+0.3
93	Ellis County	35.1	+0.2
94	Lyon County	35	0
95	Haskell County	34.7	-0.4
96	Wyandotte County	34.5	0
97	Crawford County	34.4	+0.1
97	Grant County	34.4	+0.2
99	Hamilton County	33.9	+0.8
100	Finney County	33	+0.3
101	Douglas County	32.9	+0.2
102	Ford County	31.9	+0.1
103	Seward County	30.8	0
104	Geary County	27.7	-0.5
105	Riley County	25.6	+0.3

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 Kansas by median age on 1 July (US county estimates), 2025) [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 Kansas by median age on 1 July (US county estimates), 2025. 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/kansas-counties. 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 Kansas by median age on 1 July (US county estimates), 2025. 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/kansas-counties.

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 Kansas by median age on 1 July (US county estimates), 2025 [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/kansas-counties (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_kansas_by_2025,
  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 Kansas by median age on 1 July (US county estimates), 2025}},
  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/kansas-counties. 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 Kansas by median age on 1 July (US county estimates), 2025
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/kansas-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/kansas-counties.
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)?

Elk County, with 50.8 years in 2025, according to the U.S. Census Bureau.

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

Riley County, with 25.6 years in 2025.

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.