Data / Rankings / Population under 18 / Counties in Kansas

Counties in Kansas by population under 18

Geary County had the highest population under 18 of 105 counties in 2022, at 30.2%. Riley County had the lowest, at 16.4%. The median was 23.4% and the figure for Kansas was 23.7%. Source: the U.S. Census Bureau.

Highest30.2Geary County
Lowest16.4Riley County
Median23.4105 counties
Kansas23.7History

Top 40 counties, 2022

Geary County: 30.2 %Geary County30.2Ford County: 30.2 %Ford County30.2Seward County: 30.1 %Seward County30.1Grant County: 29.6 %Grant County29.6Pottawatomie County: 29.3 %Pottawatomie County29.3Finney County: 29.2 %Finney County29.2Hamilton County: 28.6 %Hamilton County28.6Kearny County: 28.2 %Kearny County28.2Stevens County: 28.1 %Stevens County28.1Gray County: 28.1 %Gray County28.1Haskell County: 28 %Haskell County28Wyandotte County: 26.7 %Wyandotte County26.7Wichita County: 26.6 %Wichita County26.6Stanton County: 26.5 %Stanton County26.5Gove County: 26.3 %Gove County26.3Meade County: 26.2 %Meade County26.2Nemaha County: 25.8 %Nemaha County25.8Wallace County: 25.8 %Wallace County25.8Greeley County: 25.8 %Greeley County25.8Bourbon County: 25.7 %Bourbon County25.7Jackson County: 25.5 %Jackson County25.5Logan County: 25.2 %Logan County25.2Scott County: 25.2 %Scott County25.2Butler County: 25.2 %Butler County25.2Brown County: 25.1 %Brown County25.1Labette County: 24.9 %Labette County24.9Hodgeman County: 24.8 %Hodgeman County24.8Harper County: 24.7 %Harper County24.7Sedgwick County: 24.6 %Sedgwick County24.6Anderson County: 24.6 %Anderson County24.6Washington County: 24.5 %Washington County24.5Sheridan County: 24.3 %Sheridan County24.3Neosho County: 24.2 %Neosho County24.2Barton County: 24.2 %Barton County24.2Sumner County: 24.1 %Sumner County24.1Morton County: 24.1 %Morton County24.1Stafford County: 23.9 %Stafford County23.9Sherman County: 23.9 %Sherman County23.9Wilson County: 23.9 %Wilson County23.9Leavenworth County: 23.9 %Leavenworth County23.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Geary County30.2+0.3 pts
2Ford County30.2-0.5 pts
3Seward County30.1-0.3 pts
4Grant County29.6-0.2 pts
5Pottawatomie County29.3+0.1 pts
6Finney County29.2-0.3 pts
7Hamilton County28.6+0.8 pts
8Kearny County28.2-0 pts
9Stevens County28.1-0.4 pts
10Gray County28.1-0.1 pts
11Haskell County28-0.6 pts
12Wyandotte County26.7-0.2 pts
13Wichita County26.6+1 pts
14Stanton County26.5-0.5 pts
15Gove County26.3-0.3 pts
16Meade County26.2-0.2 pts
17Nemaha County25.8-0.3 pts
18Wallace County25.8-0.8 pts
19Greeley County25.8+0.4 pts
20Bourbon County25.7-0.2 pts
21Jackson County25.50 pts
22Logan County25.2+0.3 pts
23Scott County25.2-0.9 pts
24Butler County25.2-0.1 pts
25Brown County25.1+0.1 pts
26Labette County24.9-0.1 pts
27Hodgeman County24.8+1.5 pts
28Harper County24.7+0.4 pts
29Sedgwick County24.6-0.3 pts
30Anderson County24.6-0.9 pts
31Washington County24.5+0.4 pts
32Sheridan County24.3-0.6 pts
33Neosho County24.2-0.5 pts
34Barton County24.2-0.1 pts
35Sumner County24.10 pts
36Morton County24.1-0 pts
37Stafford County23.9+0.1 pts
38Sherman County23.90 pts
39Wilson County23.9+0.2 pts
40Leavenworth County23.9-0.1 pts
41Pratt County23.8-0.1 pts
42Thomas County23.8+0.2 pts
43Miami County23.8-0.6 pts
44Cowley County23.7-0.1 pts
45Mitchell County23.6+0.4 pts
46Marshall County23.60 pts
47Comanche County23.5+1.1 pts
48Johnson County23.5-0.3 pts
48Ottawa County23.5+0.6 pts
50Harvey County23.5-0.2 pts
50Rice County23.50 pts
52Rawlins County23.4+1 pts
53Wabaunsee County23.4-0.3 pts
54Montgomery County23.3-0.1 pts
55Osage County23.2+0.1 pts
56Dickinson County23.2-0 pts
57Franklin County23.1-0.4 pts
58Cherokee County23.1-0.2 pts
59Osborne County23+1.2 pts
60Kiowa County23+0.1 pts
61Shawnee County22.9-0.1 pts
62Clark County22.9+0.7 pts
63Linn County22.8-0 pts
64Cloud County22.8+0.3 pts
65Chautauqua County22.8+0.6 pts
66Crawford County22.7+0.1 pts
67Barber County22.6+0.3 pts
68Jefferson County22.6-0.4 pts
69Kingman County22.6+0.4 pts
70Saline County22.5-0.2 pts
71Coffey County22.4+0.1 pts
72Cheyenne County22.3-0.4 pts
73Lincoln County22.30 pts
74Lyon County22.20 pts
75Allen County22.2+0.5 pts
76Russell County22.2-0.6 pts
77Clay County22.2-0.5 pts
78Reno County22+0.1 pts
79Phillips County21.9-0.2 pts
80Edwards County21.9-0.2 pts
81Doniphan County21.9-0 pts
82McPherson County21.80 pts
83Morris County21.7+0.1 pts
84Marion County21.6+0.4 pts
85Greenwood County21.6+0.6 pts
86Atchison County21.6-0 pts
87Rooks County21.6-0.2 pts
88Lane County21.5+0.1 pts
89Republic County21.4+0.1 pts
90Elk County21.1+0.4 pts
91Jewell County20.9+0.2 pts
92Decatur County20.9-0.6 pts
93Graham County20.7+0.2 pts
94Ness County20.6-0.2 pts
95Rush County20.5+0.8 pts
96Woodson County20.3+0.1 pts
97Ellis County19.9-0.3 pts
98Norton County19.9+0.6 pts
99Trego County19.9-0.2 pts
100Smith County19.8+0.2 pts
101Pawnee County19.6-0.1 pts
102Chase County19.2-0.6 pts
103Ellsworth County19.1+0.8 pts
104Douglas County18.1-0.4 pts
105Riley County16.4-0.3 pts

Other periods

About this ranking

Residents aged 0 to 17 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.

Uses the US age of majority. Not comparable with population_0_14_share, which stops at 14.

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 0 to 17 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 0 to 17 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 under 18, 2022) [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 0 to 17 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 under 18, 2022. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-under-18/kansas-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2022. 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-under-18/kansas-counties?period=2022.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2022 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/kansas-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kansas_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2022}},
  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-under-18/kansas-counties?period=2022. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 0 to 17 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 under 18, 2022
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-under-18/kansas-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/kansas-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18?

Geary County, with 30.2% in 2022, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Riley County, with 16.4% in 2022.

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 0 to 17 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 under 18: other rankings

Counties in Kansas: more rankings