Data / Rankings / Population under 18 / Counties in Kansas

Counties in Kansas by population under 18

Grant County had the highest population under 18 of 105 counties in 2015, at 32%. Riley County had the lowest, at 17.3%. The median was 23.7% and the figure for Kansas was 24.9%. Source: the U.S. Census Bureau.

Highest32Grant County
Lowest17.3Riley County
Median23.7105 counties
Kansas24.9History

Top 40 counties, 2015

Grant County: 32 %Grant County32Seward County: 31.4 %Seward County31.4Finney County: 31.1 %Finney County31.1Ford County: 30.9 %Ford County30.9Stevens County: 30.8 %Stevens County30.8Hamilton County: 30.2 %Hamilton County30.2Haskell County: 29.9 %Haskell County29.9Geary County: 29.9 %Geary County29.9Gray County: 29.3 %Gray County29.3Stanton County: 29.2 %Stanton County29.2Pottawatomie County: 29 %Pottawatomie County29Kearny County: 28.7 %Kearny County28.7Wyandotte County: 27.8 %Wyandotte County27.8Wichita County: 27 %Wichita County27Meade County: 26.7 %Meade County26.7Sedgwick County: 26.2 %Sedgwick County26.2Morton County: 26.2 %Morton County26.2Scott County: 26.2 %Scott County26.2Butler County: 26.2 %Butler County26.2Nemaha County: 25.9 %Nemaha County25.9Miami County: 25.5 %Miami County25.5Bourbon County: 25.5 %Bourbon County25.5Johnson County: 25.4 %Johnson County25.4Gove County: 25.4 %Gove County25.4Jackson County: 25.4 %Jackson County25.4Wabaunsee County: 25.2 %Wabaunsee County25.2Brown County: 24.9 %Brown County24.9Neosho County: 24.9 %Neosho County24.9Sumner County: 24.9 %Sumner County24.9Harvey County: 24.9 %Harvey County24.9Comanche County: 24.8 %Comanche County24.8Franklin County: 24.7 %Franklin County24.7Anderson County: 24.7 %Anderson County24.7Dickinson County: 24.5 %Dickinson County24.5Barton County: 24.5 %Barton County24.5Greeley County: 24.4 %Greeley County24.4Leavenworth County: 24.4 %Leavenworth County24.4Shawnee County: 24.3 %Shawnee County24.3Pratt County: 24.2 %Pratt County24.2Cherokee County: 24.2 %Cherokee County24.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2015 (%)Change on 2014
1Grant County32-0.1 pts
2Seward County31.4-0 pts
3Finney County31.1-0.1 pts
4Ford County30.9-0.1 pts
5Stevens County30.8-0.2 pts
6Hamilton County30.2-0.3 pts
7Haskell County29.9+0.4 pts
8Geary County29.9-0.3 pts
9Gray County29.30 pts
10Stanton County29.2+0.8 pts
11Pottawatomie County29-0.3 pts
12Kearny County28.7-0.2 pts
13Wyandotte County27.8-0.2 pts
14Wichita County27+0.5 pts
15Meade County26.7-0.7 pts
16Sedgwick County26.2-0.2 pts
17Morton County26.2+0.1 pts
18Scott County26.2+0.2 pts
19Butler County26.2-0.1 pts
20Nemaha County25.9+0.3 pts
21Miami County25.5-0.2 pts
22Bourbon County25.5+0.3 pts
23Johnson County25.4-0.2 pts
24Gove County25.4+1.4 pts
25Jackson County25.4-0.4 pts
26Wabaunsee County25.2+0.4 pts
27Brown County24.9-0.1 pts
28Neosho County24.9-0.1 pts
29Sumner County24.9-0 pts
30Harvey County24.9-0.1 pts
31Comanche County24.8-1.8 pts
32Franklin County24.7-0.2 pts
33Anderson County24.7-0.5 pts
34Dickinson County24.5+0.1 pts
35Barton County24.50 pts
36Greeley County24.4+0.6 pts
37Leavenworth County24.4-0.2 pts
38Shawnee County24.3-0.1 pts
39Pratt County24.20 pts
40Cherokee County24.2-0.2 pts
41Sheridan County24.2+0.3 pts
42Lincoln County24.2-0.5 pts
43Wallace County24.1+0.2 pts
44Labette County24.10 pts
45Saline County24.1-0.1 pts
46Sherman County24+0.1 pts
47Harper County24+0.3 pts
48Montgomery County23.90 pts
49Rice County23.9-0.1 pts
50Cowley County23.9-0.3 pts
51Jefferson County23.9-0.1 pts
52Hodgeman County23.7+0.4 pts
53Ottawa County23.7-0 pts
54Wilson County23.7-0.3 pts
55Linn County23.7-0 pts
56Clark County23.6-1.3 pts
57Stafford County23.6-0.1 pts
58Logan County23.6+0.5 pts
59Thomas County23.6+0.4 pts
60Marshall County23.30 pts
61Osage County23.2-0.6 pts
62Reno County23.2-0.1 pts
63Clay County23.10 pts
64Coffey County23.1-0.3 pts
65Edwards County22.9-0.8 pts
66Atchison County22.9-0.1 pts
67McPherson County22.8-0.1 pts
68Rooks County22.8-0.4 pts
69Phillips County22.7-0.2 pts
70Kingman County22.7+0.5 pts
71Washington County22.5-0.3 pts
72Mitchell County22.5+0.7 pts
73Crawford County22.4-0.1 pts
74Barber County22.4+0.6 pts
75Russell County22.3+0.8 pts
76Allen County22.3-0.7 pts
77Lyon County22.3-0.2 pts
78Cheyenne County22.2+0.8 pts
79Cloud County22.1+0.1 pts
80Kiowa County21.9+1.5 pts
81Ness County21.9-0.6 pts
82Doniphan County21.9-0.1 pts
83Marion County21.8-0.3 pts
84Ellis County21.40 pts
85Woodson County21.4-0 pts
86Morris County21.2-0.1 pts
87Greenwood County21.2-0.2 pts
88Chase County21.2-0.5 pts
89Chautauqua County21.1+0.3 pts
90Lane County21+0.5 pts
91Graham County20.8+1.4 pts
92Osborne County20.6-0.4 pts
93Pawnee County20.3-0.6 pts
94Decatur County20.3+0.5 pts
95Elk County20.2-0 pts
96Rawlins County20.1+0.4 pts
97Republic County20+0.9 pts
98Trego County19.9+0.8 pts
99Rush County19.8+0.4 pts
100Smith County19.5+0.3 pts
101Douglas County19.5+0.1 pts
102Jewell County19.3-0.3 pts
103Norton County19.2+0.5 pts
104Ellsworth County18.9+0.5 pts
105Riley County17.3+0.1 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, 2015) [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, 2015. 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=2015. 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, 2015. 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=2015.

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, 2015 [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=2015 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kansas_by_2015,
  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, 2015}},
  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=2015. 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, 2015
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=2015
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/kansas-counties?period=2015.
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?

Grant County, with 32% in 2015, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Riley County, with 17.3% in 2015.

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