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 2019, at 72.7%. Elk County had the lowest, at 50.2%. The median was 55.3% and the figure for Kansas was 59.4%. Source: the U.S. Census Bureau.

Highest72.7Riley County
Lowest50.2Elk County
Median55.3105 counties
Kansas59.4History

Top 40 counties, 2019

Riley County: 72.7 %Riley County72.7Douglas County: 67.5 %Douglas County67.5Ellis County: 63.2 %Ellis County63.2Lyon County: 61.7 %Lyon County61.7Geary County: 61.5 %Geary County61.5Norton County: 61.4 %Norton County61.4Crawford County: 61.3 %Crawford County61.3Leavenworth County: 61 %Leavenworth County61Wyandotte County: 60.4 %Wyandotte County60.4Johnson County: 60.3 %Johnson County60.3Atchison County: 60.2 %Atchison County60.2Sedgwick County: 59.9 %Sedgwick County59.9Finney County: 59.5 %Finney County59.5Pawnee County: 59.5 %Pawnee County59.5Thomas County: 59.1 %Thomas County59.1Seward County: 59 %Seward County59Doniphan County: 58.8 %Doniphan County58.8Franklin County: 58.7 %Franklin County58.7Ellsworth County: 58.5 %Ellsworth County58.5Saline County: 58.4 %Saline County58.4Butler County: 58.3 %Butler County58.3Miami County: 58.2 %Miami County58.2Ford County: 58 %Ford County58Shawnee County: 57.9 %Shawnee County57.9Cowley County: 57.7 %Cowley County57.7Reno County: 57.5 %Reno County57.5McPherson County: 57.4 %McPherson County57.4Jefferson County: 57.4 %Jefferson County57.4Chase County: 57.3 %Chase County57.3Allen County: 57.3 %Allen County57.3Cherokee County: 57.1 %Cherokee County57.1Rice County: 57.1 %Rice County57.1Ottawa County: 56.4 %Ottawa County56.4Kiowa County: 56.4 %Kiowa County56.4Sherman County: 56.4 %Sherman County56.4Barton County: 56.3 %Barton County56.3Hamilton County: 56.2 %Hamilton County56.2Grant County: 56.2 %Grant County56.2Labette County: 56 %Labette County56Montgomery County: 56 %Montgomery County56
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2019 (%)Change on 2018
1Riley County72.7-1.1 pts
2Douglas County67.5-0.6 pts
3Ellis County63.2-0.3 pts
4Lyon County61.7-0.4 pts
5Geary County61.5-0.3 pts
6Norton County61.4-0.2 pts
7Crawford County61.3-0.5 pts
8Leavenworth County61-0.4 pts
9Wyandotte County60.4-0.1 pts
10Johnson County60.3-0.3 pts
11Atchison County60.20 pts
12Sedgwick County59.9-0.2 pts
13Finney County59.50 pts
14Pawnee County59.5-0.6 pts
15Thomas County59.1-0.2 pts
16Seward County59-0.1 pts
17Doniphan County58.8-0.5 pts
18Franklin County58.7-0.3 pts
19Ellsworth County58.5-0.6 pts
20Saline County58.4-0.4 pts
21Butler County58.3-0.5 pts
22Miami County58.2-0.2 pts
23Ford County58-0.2 pts
24Shawnee County57.9-0.4 pts
25Cowley County57.7-0.2 pts
26Reno County57.5-0.2 pts
27McPherson County57.4-0.1 pts
28Jefferson County57.4-0.6 pts
29Chase County57.30 pts
30Allen County57.3-0.1 pts
31Cherokee County57.1-0.3 pts
32Rice County57.1-0.6 pts
33Ottawa County56.4-0.6 pts
34Kiowa County56.4-0.8 pts
35Sherman County56.4-1.2 pts
36Barton County56.3-0.6 pts
37Hamilton County56.2-0.9 pts
38Grant County56.2-0.1 pts
39Labette County56-0.7 pts
40Montgomery County56-0.6 pts
41Neosho County55.9-0.1 pts
42Osage County55.9-0.5 pts
43Dickinson County55.7-0.2 pts
44Pottawatomie County55.7-0.4 pts
45Harvey County55.7-0.4 pts
46Kearny County55.7-0.6 pts
47Sumner County55.6-0.3 pts
48Stanton County55.5+0.3 pts
49Rooks County55.5-0.6 pts
50Meade County55.4+0.5 pts
51Morton County55.3-0.3 pts
52Pratt County55.3+0.1 pts
53Logan County55.3-0.8 pts
54Linn County55.2+0.3 pts
55Jackson County55.2-0.5 pts
56Stevens County55.1-0.2 pts
57Kingman County55.1-0.4 pts
58Wabaunsee County55.1-0.4 pts
59Bourbon County55-0.6 pts
60Greeley County54.9+1.5 pts
61Marion County54.9-0.4 pts
62Haskell County54.9-0.9 pts
63Cloud County54.9-0.5 pts
64Woodson County54.8-0.3 pts
65Wilson County54.8-0.5 pts
66Russell County54.8-0.4 pts
67Coffey County54.7-0.6 pts
68Brown County54.6-0.2 pts
69Morris County54.5+0.1 pts
70Clark County54.5-0 pts
71Edwards County54.5-1.1 pts
72Stafford County54.3-0.1 pts
73Gray County54.3-0.4 pts
74Lane County54.3-0.6 pts
75Wichita County54.2+0.2 pts
76Trego County54-0.7 pts
77Scott County54+0.1 pts
78Marshall County53.9-0.6 pts
79Clay County53.9-0.1 pts
80Barber County53.7-0.8 pts
81Washington County53.6-0.4 pts
82Rush County53.5+0.1 pts
83Wallace County53.4-0.7 pts
84Nemaha County53.4-0.7 pts
85Chautauqua County53.3+0.3 pts
86Anderson County53.1-0.5 pts
87Ness County53.1-0.6 pts
88Greenwood County53-0.5 pts
89Sheridan County52.8-0 pts
90Phillips County52.7-1.1 pts
91Decatur County52.6-0.9 pts
92Harper County52.5-0.2 pts
93Republic County52.4+0.1 pts
94Osborne County52.4-1.2 pts
95Mitchell County52.1-0.5 pts
96Comanche County51.9+0.6 pts
97Hodgeman County51.8-1.1 pts
98Cheyenne County51.8+0.7 pts
99Lincoln County51.5-0.7 pts
100Jewell County51.5-1.2 pts
101Smith County51.5-0.7 pts
102Graham County51.1-1.5 pts
103Gove County51-0.4 pts
104Rawlins County50.4-0.9 pts
105Elk County50.2-0.7 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, 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: 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, 2019. 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=2019. 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, 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/population-18-64/kansas-counties?period=2019.

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

BibTeX
@misc{census_counties_in_kansas_by_2019,
  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, 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/population-18-64/kansas-counties?period=2019. 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, 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/population-18-64/kansas-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/kansas-counties?period=2019.
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 72.7% in 2019, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Elk County, with 50.2% 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: 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