Data / Rankings / Population under 18 / Counties in Kansas

Counties in Kansas by population under 18, 2025

Geary County had the highest population under 18 of 105 counties in 2025, at 30.9%. Riley County had the lowest, at 16.3%. The median was 22.9% and the figure for Kansas was 22.9%. Source: the U.S. Census Bureau.

Highest30.9Geary County
Lowest16.3Riley County
Median22.9105 counties
Kansas22.9History

Top 40 counties, 2025

Geary County: 30.9 %Geary County30.9Seward County: 29.9 %Seward County29.9Ford County: 29.8 %Ford County29.8Haskell County: 28.7 %Haskell County28.7Grant County: 28.5 %Grant County28.5Hamilton County: 28.4 %Hamilton County28.4Gray County: 28.4 %Gray County28.4Kearny County: 28.3 %Kearny County28.3Pottawatomie County: 28.1 %Pottawatomie County28.1Finney County: 28 %Finney County28Wichita County: 27.5 %Wichita County27.5Wallace County: 27 %Wallace County27Gove County: 26.9 %Gove County26.9Stevens County: 26.6 %Stevens County26.6Stanton County: 26.3 %Stanton County26.3Meade County: 26 %Meade County26Wyandotte County: 26 %Wyandotte County26Nemaha County: 25.8 %Nemaha County25.8Logan County: 25.7 %Logan County25.7Greeley County: 25.5 %Greeley County25.5Scott County: 25.2 %Scott County25.2Bourbon County: 25 %Bourbon County25Jackson County: 24.9 %Jackson County24.9Anderson County: 24.8 %Anderson County24.8Stafford County: 24.7 %Stafford County24.7Washington County: 24.6 %Washington County24.6Labette County: 24.5 %Labette County24.5Harper County: 24.5 %Harper County24.5Comanche County: 24.4 %Comanche County24.4Kiowa County: 24.2 %Kiowa County24.2Brown County: 24.1 %Brown County24.1Butler County: 23.9 %Butler County23.9Cheyenne County: 23.9 %Cheyenne County23.9Hodgeman County: 23.7 %Hodgeman County23.7Sedgwick County: 23.7 %Sedgwick County23.7Rawlins County: 23.6 %Rawlins County23.6Lane County: 23.6 %Lane County23.6Sherman County: 23.5 %Sherman County23.5Cowley County: 23.5 %Cowley County23.5Barton County: 23.5 %Barton County23.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2025 (%)Change on 2024
1Geary County30.9+0.1 pts
2Seward County29.9-0 pts
3Ford County29.8-0.3 pts
4Haskell County28.7+0.6 pts
5Grant County28.5-0.3 pts
6Hamilton County28.4-0.7 pts
7Gray County28.4-0.4 pts
8Kearny County28.3-0.3 pts
9Pottawatomie County28.1-0.3 pts
10Finney County28-0.6 pts
11Wichita County27.5-0.1 pts
12Wallace County27+0.2 pts
13Gove County26.9+0.5 pts
14Stevens County26.6-0.4 pts
15Stanton County26.30 pts
16Meade County26-0.1 pts
17Wyandotte County26-0.3 pts
18Nemaha County25.8-0.1 pts
19Logan County25.7+0.1 pts
20Greeley County25.5-0.5 pts
21Scott County25.20 pts
22Bourbon County25-0.5 pts
23Jackson County24.9-0.1 pts
24Anderson County24.8-0.1 pts
25Stafford County24.7+1.4 pts
26Washington County24.60 pts
27Labette County24.5-0.1 pts
28Harper County24.5-0.2 pts
29Comanche County24.4-0.2 pts
30Kiowa County24.2+0.4 pts
31Brown County24.1+0.1 pts
32Butler County23.9-0.4 pts
33Cheyenne County23.9-0.3 pts
34Hodgeman County23.7-1.2 pts
35Sedgwick County23.7-0.3 pts
36Rawlins County23.6+0.2 pts
37Lane County23.6+0.8 pts
38Sherman County23.50 pts
39Cowley County23.5+0.1 pts
40Barton County23.5-0.5 pts
41Sheridan County23.5-0.4 pts
42Neosho County23.5-0.6 pts
43Mitchell County23.3-0.2 pts
44Sumner County23.3-0.5 pts
45Thomas County23.2-0.1 pts
46Pratt County23.2-0.4 pts
47Wilson County23.1-0.2 pts
48Rice County23.1-0.2 pts
49Ottawa County23.1-0.7 pts
50Leavenworth County23-0.4 pts
51Miami County23-0.3 pts
52Edwards County23-0.1 pts
53Dickinson County22.9-0.4 pts
54Cloud County22.9+0.3 pts
55Harvey County22.9-0.2 pts
56Chautauqua County22.8-0.4 pts
57Marshall County22.7-0.4 pts
58Cherokee County22.7-0.3 pts
59Wabaunsee County22.6-0.6 pts
60Crawford County22.60 pts
61Coffey County22.5+0.5 pts
62Johnson County22.4-0.4 pts
63Morton County22.4-0.5 pts
64Osage County22.4-0.2 pts
65Linn County22.3-0.1 pts
66Clark County22.3+0.8 pts
67Republic County22.1+0.1 pts
68Shawnee County22.1-0.3 pts
69Kingman County22.1-0.2 pts
70Osborne County22-0.6 pts
71Phillips County22-0.2 pts
72Barber County21.9-0.4 pts
73Franklin County21.9-0.5 pts
74Montgomery County21.9-0.5 pts
75Saline County21.9-0.3 pts
76Russell County21.7-0.1 pts
77Doniphan County21.7+0.1 pts
78Morris County21.7+0.3 pts
79Lincoln County21.6-0.4 pts
80Allen County21.6-0.3 pts
81Lyon County21.6-0.3 pts
82Clay County21.5-0.5 pts
83Marion County21.5+0.1 pts
84Decatur County21.40 pts
85Jefferson County21.3-0.6 pts
86McPherson County21.2-0.2 pts
87Reno County21.2-0.2 pts
88Rooks County21.2-0.3 pts
89Smith County20.9+0.1 pts
90Atchison County20.9-0.3 pts
91Ness County20.7-0 pts
92Woodson County20.60 pts
93Graham County20.5+0.8 pts
94Trego County20.4+0.1 pts
95Jewell County20.1-0.3 pts
96Norton County20+0.1 pts
97Greenwood County20-0.5 pts
98Elk County19.6-0.3 pts
99Chase County19.5+0.8 pts
100Ellis County19.4-0.1 pts
101Rush County19.3-0.1 pts
102Pawnee County19.2-0.4 pts
103Ellsworth County18.2-0.4 pts
104Douglas County17.1-0.4 pts
105Riley County16.3-0.3 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.

Use this data in your AI agent

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Rank Counties in Kansas by population under 18 using official data, and cite the source.
rank_places {"indicator":"population_0_17_share","level":"province","within":"Kansas","limit":10}
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Questions

Which county has the highest population under 18?

Geary County, with 30.9% in 2025, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Riley County, with 16.3% 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: 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