Data / Rankings / Population aged 18 to 64 / Counties in Kansas

Counties in Kansas by population aged 18 to 64

Riley County had the highest population aged 18 to 64 of 105 counties in 2021, at 72.6%. Rawlins County had the lowest, at 49.1%. The median was 54.9% and the figure for Kansas was 58.9%. Source: the U.S. Census Bureau.

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Highest72.6Riley County
Lowest49.1Rawlins County
Median54.9105 counties
Kansas58.9History

Map of counties, 2021

Allen County: 56.4 %Anderson County: 53.3 %Atchison County: 59.7 %Barber County: 51.1 %Barton County: 55.1 %Bourbon County: 54 %Brown County: 53.3 %Butler County: 57.9 %Chase County: 56.2 %Chautauqua County: 52.7 %Cherokee County: 56.3 %Cheyenne County: 50.6 %Clark County: 54.6 %Clay County: 53 %Cloud County: 54.8 %Coffey County: 54.6 %Comanche County: 50.9 %Cowley County: 57.2 %Crawford County: 61 %Decatur County: 49.6 %Dickinson County: 55.2 %Doniphan County: 58 %Douglas County: 67 %Edwards County: 55.1 %Elk County: 51.1 %Ellis County: 62.7 %Ellsworth County: 58.1 %Finney County: 59 %Ford County: 57.7 %Franklin County: 58 %Geary County: 60.3 %Gove County: 51.3 %Graham County: 51.5 %Grant County: 56 %Gray County: 54.1 %Greeley County: 54.2 %Greenwood County: 51.9 %Hamilton County: 57.7 %Harper County: 51.3 %Harvey County: 54.9 %Haskell County: 55.7 %Hodgeman County: 53.7 %Jackson County: 54.8 %Jefferson County: 56.4 %Jewell County: 49.9 %Johnson County: 60 %Kearny County: 55.2 %Kingman County: 55.1 %Kiowa County: 54.3 %Labette County: 54.9 %Lane County: 52.7 %Leavenworth County: 60.1 %Lincoln County: 50.7 %Linn County: 55.3 %Logan County: 53.6 %Lyon County: 60.8 %McPherson County: 56.8 %Marion County: 54.5 %Marshall County: 52.7 %Meade County: 54.9 %Miami County: 57.5 %Mitchell County: 51.5 %Montgomery County: 55.6 %Morris County: 53.1 %Morton County: 54.4 %Nemaha County: 52.8 %Neosho County: 55.1 %Ness County: 51.8 %Norton County: 60.7 %Osage County: 55.1 %Osborne County: 50.4 %Ottawa County: 55.8 %Pawnee County: 58.4 %Phillips County: 51.9 %Pottawatomie County: 55 %Pratt County: 54.5 %Rawlins County: 49.1 %Reno County: 57.1 %Republic County: 51.1 %Rice County: 56.4 %Riley County: 72.6 %Rooks County: 54.3 %Rush County: 52.8 %Russell County: 53.4 %Saline County: 58 %Scott County: 54.4 %Sedgwick County: 59.3 %Seward County: 58.8 %Shawnee County: 57.4 %Sheridan County: 52 %Sherman County: 55.7 %Smith County: 50.1 %Stafford County: 52.9 %Stanton County: 55.6 %Stevens County: 55.5 %Sumner County: 55.1 %Thomas County: 57.6 %Trego County: 53.6 %Wabaunsee County: 54.5 %Wallace County: 50.3 %Washington County: 52.2 %Wichita County: 53.7 %Wilson County: 53.5 %Woodson County: 55.4 %Wyandotte County: 59.9 %
  • Under 52
  • 52 to 54
  • 54 to 55
  • 55 to 56
  • 56 to 58
  • 58 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Riley County: 72.6 %Riley County72.6Douglas County: 67 %Douglas County67Ellis County: 62.7 %Ellis County62.7Crawford County: 61 %Crawford County61Lyon County: 60.8 %Lyon County60.8Norton County: 60.7 %Norton County60.7Geary County: 60.3 %Geary County60.3Leavenworth County: 60.1 %Leavenworth County60.1Johnson County: 60 %Johnson County60Wyandotte County: 59.9 %Wyandotte County59.9Atchison County: 59.7 %Atchison County59.7Sedgwick County: 59.3 %Sedgwick County59.3Finney County: 59 %Finney County59Seward County: 58.8 %Seward County58.8Pawnee County: 58.4 %Pawnee County58.4Ellsworth County: 58.1 %Ellsworth County58.1Saline County: 58 %Saline County58Franklin County: 58 %Franklin County58Doniphan County: 58 %Doniphan County58Butler County: 57.9 %Butler County57.9Ford County: 57.7 %Ford County57.7Hamilton County: 57.7 %Hamilton County57.7Thomas County: 57.6 %Thomas County57.6Miami County: 57.5 %Miami County57.5Shawnee County: 57.4 %Shawnee County57.4Cowley County: 57.2 %Cowley County57.2Reno County: 57.1 %Reno County57.1McPherson County: 56.8 %McPherson County56.8Allen County: 56.4 %Allen County56.4Rice County: 56.4 %Rice County56.4Jefferson County: 56.4 %Jefferson County56.4Cherokee County: 56.3 %Cherokee County56.3Chase County: 56.2 %Chase County56.2Grant County: 56 %Grant County56Ottawa County: 55.8 %Ottawa County55.8Haskell County: 55.7 %Haskell County55.7Sherman County: 55.7 %Sherman County55.7Stanton County: 55.6 %Stanton County55.6Montgomery County: 55.6 %Montgomery County55.6Stevens County: 55.5 %Stevens County55.5Riley County: 72.6 %Riley County72.6Douglas County: 67 %Douglas County67Ellis County: 62.7 %Ellis County62.7Crawford County: 61 %Crawford County61Lyon County: 60.8 %Lyon County60.8Norton County: 60.7 %Norton County60.7Geary County: 60.3 %Geary County60.3Leavenworth County: 60.1 %Leavenworth County60.1Johnson County: 60 %Johnson County60Wyandotte County: 59.9 %Wyandotte County59.9Atchison County: 59.7 %Atchison County59.7Sedgwick County: 59.3 %Sedgwick County59.3Finney County: 59 %Finney County59Seward County: 58.8 %Seward County58.8Pawnee County: 58.4 %Pawnee County58.4Ellsworth County: 58.1 %Ellsworth County58.1Saline County: 58 %Saline County58Franklin County: 58 %Franklin County58Doniphan County: 58 %Doniphan County58Butler County: 57.9 %Butler County57.9Ford County: 57.7 %Ford County57.7Hamilton County: 57.7 %Hamilton County57.7Thomas County: 57.6 %Thomas County57.6Miami County: 57.5 %Miami County57.5Shawnee County: 57.4 %Shawnee County57.4Cowley County: 57.2 %Cowley County57.2Reno County: 57.1 %Reno County57.1McPherson County: 56.8 %McPherson County56.8Allen County: 56.4 %Allen County56.4Rice County: 56.4 %Rice County56.4Jefferson County: 56.4 %Jefferson County56.4Cherokee County: 56.3 %Cherokee County56.3Chase County: 56.2 %Chase County56.2Grant County: 56 %Grant County56Ottawa County: 55.8 %Ottawa County55.8Haskell County: 55.7 %Haskell County55.7Sherman County: 55.7 %Sherman County55.7Stanton County: 55.6 %Stanton County55.6Montgomery County: 55.6 %Montgomery County55.6Stevens County: 55.5 %Stevens County55.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)Change on 2020
1Riley County72.6-0.1 pts
2Douglas County67-0.2 pts
3Ellis County62.70 pts
4Crawford County61+0.1 pts
5Lyon County60.8-0.3 pts
6Norton County60.7-0.3 pts
7Geary County60.3-0.8 pts
8Leavenworth County60.1-0.4 pts
9Johnson County60-0.1 pts
10Wyandotte County59.9-0.1 pts
11Atchison County59.7-0.2 pts
12Sedgwick County59.3-0.2 pts
13Finney County59-0.4 pts
14Seward County58.80 pts
15Pawnee County58.4-0.8 pts
16Ellsworth County58.1-0.5 pts
17Saline County58-0.1 pts
18Franklin County58-0.2 pts
19Doniphan County58-0.1 pts
20Butler County57.9-0 pts
21Ford County57.7-0.1 pts
22Hamilton County57.7+0.2 pts
23Thomas County57.6-0.7 pts
24Miami County57.5-0.1 pts
25Shawnee County57.4-0.1 pts
26Cowley County57.2-0.1 pts
27Reno County57.1-0 pts
28McPherson County56.8-0.2 pts
29Allen County56.4-0 pts
30Rice County56.4-0.2 pts
31Jefferson County56.4-0.2 pts
32Cherokee County56.3-0.2 pts
33Chase County56.2-0.3 pts
34Grant County56-0.2 pts
35Ottawa County55.8-0 pts
36Haskell County55.70 pts
37Sherman County55.7-0.1 pts
38Stanton County55.6+0.4 pts
39Montgomery County55.6-0 pts
40Stevens County55.5-0.3 pts
41Woodson County55.4+0.4 pts
42Linn County55.3-0.1 pts
43Dickinson County55.2-0.3 pts
44Kearny County55.2-0.3 pts
45Neosho County55.1-0.3 pts
46Osage County55.1-0.3 pts
47Sumner County55.1-0.2 pts
48Kingman County55.1+0.1 pts
49Edwards County55.1+0.2 pts
50Barton County55.1-0.5 pts
51Pottawatomie County55-0.4 pts
52Harvey County54.9-0.1 pts
53Labette County54.9-0.3 pts
54Meade County54.9-0.1 pts
55Cloud County54.8-0.3 pts
56Jackson County54.8-0.1 pts
57Clark County54.6+0.2 pts
58Coffey County54.6-0.1 pts
59Pratt County54.5-0.3 pts
60Marion County54.5-0.2 pts
61Wabaunsee County54.5-0.5 pts
62Morton County54.4-0.8 pts
63Scott County54.4-0.1 pts
64Rooks County54.3-0.1 pts
65Kiowa County54.3-1 pts
66Greeley County54.2+0.1 pts
67Gray County54.1+0.2 pts
68Bourbon County54-0.4 pts
69Hodgeman County53.7+0.3 pts
70Wichita County53.7-0.3 pts
71Logan County53.6-0.6 pts
72Trego County53.6-0.1 pts
73Wilson County53.5-0.9 pts
74Russell County53.4-0.3 pts
75Anderson County53.3-0 pts
76Brown County53.3-0.6 pts
77Morris County53.1-0.4 pts
78Clay County530 pts
79Stafford County52.9-0.8 pts
80Rush County52.8-0.5 pts
81Nemaha County52.8-0.1 pts
82Chautauqua County52.7-0.2 pts
83Lane County52.7+0.3 pts
84Marshall County52.7-0.7 pts
85Washington County52.2-0.4 pts
86Sheridan County52-0.3 pts
87Greenwood County51.9-0.3 pts
88Phillips County51.9+0.1 pts
89Ness County51.8-0.2 pts
90Graham County51.5+0.1 pts
91Mitchell County51.5-0.1 pts
92Harper County51.3-0.3 pts
93Gove County51.3-0.1 pts
94Elk County51.1+1 pts
95Republic County51.1-0.6 pts
96Barber County51.1-1 pts
97Comanche County50.9+0.3 pts
98Lincoln County50.7-0.7 pts
99Cheyenne County50.6-0.6 pts
100Osborne County50.4-1.7 pts
101Wallace County50.3-0.9 pts
102Smith County50.1-0.9 pts
103Jewell County49.9-0.7 pts
104Decatur County49.6-1.7 pts
105Rawlins County49.1-0.8 pts

Other periods

About this ranking

Residents aged 18 to 64 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

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: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. 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: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in Kansas by population aged 18 to 64, 2021) [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: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Kansas by population aged 18 to 64, 2021. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/kansas-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in Kansas by population aged 18 to 64, 2021. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-18-64/kansas-counties?period=2021.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Kansas by population aged 18 to 64, 2021 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/kansas-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kansas_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Kansas by population aged 18 to 64, 2021}},
  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/population-18-64/kansas-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. 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: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Kansas by population aged 18 to 64, 2021
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/population-18-64/kansas-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/kansas-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. 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 population aged 18 to 64?

Riley County, with 72.6% in 2021, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Rawlins County, with 49.1% in 2021.

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: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population aged 18 to 64: other rankings

Counties in Kansas: more rankings