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 2016, at 31.6%. Riley County had the lowest, at 17%. The median was 23.7% and the figure for Kansas was 24.7%. Source: the U.S. Census Bureau.

Highest31.6Grant County
Lowest17Riley County
Median23.7105 counties
Kansas24.7History

Top 40 counties, 2016

Grant County: 31.6 %Grant County31.6Seward County: 31.2 %Seward County31.2Ford County: 30.9 %Ford County30.9Finney County: 30.8 %Finney County30.8Hamilton County: 30.6 %Hamilton County30.6Stevens County: 30.1 %Stevens County30.1Geary County: 30 %Geary County30Haskell County: 29.7 %Haskell County29.7Stanton County: 29.5 %Stanton County29.5Gray County: 29.5 %Gray County29.5Pottawatomie County: 29.3 %Pottawatomie County29.3Kearny County: 27.9 %Kearny County27.9Wyandotte County: 27.7 %Wyandotte County27.7Wichita County: 27 %Wichita County27Meade County: 26.6 %Meade County26.6Scott County: 26.5 %Scott County26.5Butler County: 26.2 %Butler County26.2Sedgwick County: 26 %Sedgwick County26Morton County: 25.7 %Morton County25.7Nemaha County: 25.7 %Nemaha County25.7Jackson County: 25.4 %Jackson County25.4Miami County: 25.3 %Miami County25.3Johnson County: 25.2 %Johnson County25.2Comanche County: 25.1 %Comanche County25.1Neosho County: 25 %Neosho County25Wabaunsee County: 25 %Wabaunsee County25Bourbon County: 24.9 %Bourbon County24.9Gove County: 24.7 %Gove County24.7Brown County: 24.7 %Brown County24.7Sumner County: 24.7 %Sumner County24.7Wallace County: 24.7 %Wallace County24.7Dickinson County: 24.7 %Dickinson County24.7Anderson County: 24.6 %Anderson County24.6Harvey County: 24.6 %Harvey County24.6Pratt County: 24.6 %Pratt County24.6Franklin County: 24.5 %Franklin County24.5Barton County: 24.4 %Barton County24.4Leavenworth County: 24.3 %Leavenworth County24.3Labette County: 24.3 %Labette County24.3Harper County: 24.3 %Harper County24.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2016 (%)Change on 2015
1Grant County31.6-0.4 pts
2Seward County31.2-0.2 pts
3Ford County30.90 pts
4Finney County30.8-0.3 pts
5Hamilton County30.6+0.4 pts
6Stevens County30.1-0.8 pts
7Geary County30+0.1 pts
8Haskell County29.7-0.1 pts
9Stanton County29.5+0.4 pts
10Gray County29.5+0.2 pts
11Pottawatomie County29.3+0.3 pts
12Kearny County27.9-0.7 pts
13Wyandotte County27.7-0.1 pts
14Wichita County270 pts
15Meade County26.6-0 pts
16Scott County26.5+0.3 pts
17Butler County26.2+0.1 pts
18Sedgwick County26-0.2 pts
19Morton County25.7-0.5 pts
20Nemaha County25.7-0.2 pts
21Jackson County25.40 pts
22Miami County25.3-0.2 pts
23Johnson County25.2-0.2 pts
24Comanche County25.1+0.2 pts
25Neosho County25+0.1 pts
26Wabaunsee County25-0.3 pts
27Bourbon County24.9-0.6 pts
28Gove County24.7-0.7 pts
29Brown County24.7-0.2 pts
30Sumner County24.7-0.2 pts
31Wallace County24.7+0.5 pts
32Dickinson County24.7+0.2 pts
33Anderson County24.6-0.1 pts
34Harvey County24.6-0.3 pts
35Pratt County24.6+0.3 pts
36Franklin County24.5-0.2 pts
37Barton County24.4-0.1 pts
38Leavenworth County24.3-0.1 pts
39Labette County24.3+0.2 pts
40Harper County24.3+0.3 pts
41Shawnee County24.1-0.2 pts
42Sheridan County24.1-0 pts
43Cowley County24.1+0.3 pts
44Lincoln County24.1-0.1 pts
45Greeley County24.1-0.4 pts
46Stafford County24+0.4 pts
47Logan County23.9+0.3 pts
48Linn County23.9+0.2 pts
49Montgomery County23.8-0.1 pts
50Ottawa County23.8+0.1 pts
51Saline County23.8-0.3 pts
52Jefferson County23.8-0.1 pts
53Cherokee County23.7-0.5 pts
54Marshall County23.7+0.3 pts
55Rice County23.7-0.2 pts
56Coffey County23.7+0.6 pts
57Clark County23.70 pts
58Sherman County23.6-0.4 pts
59Osage County23.4+0.1 pts
60Wilson County23.3-0.3 pts
61Hodgeman County23.2-0.5 pts
62Thomas County23.2-0.4 pts
63Clay County23.1-0 pts
64Edwards County23+0.1 pts
65Reno County23-0.2 pts
66Washington County22.9+0.3 pts
67Phillips County22.80 pts
68Atchison County22.8-0.1 pts
69McPherson County22.7-0.1 pts
70Mitchell County22.7+0.2 pts
71Kingman County22.7-0 pts
72Crawford County22.5+0.1 pts
73Lyon County22.5+0.2 pts
74Rooks County22.4-0.4 pts
75Allen County22.40 pts
76Cloud County22.3+0.2 pts
77Cheyenne County22.1-0 pts
78Kiowa County22+0.1 pts
79Marion County22+0.1 pts
80Russell County21.8-0.6 pts
81Barber County21.7-0.7 pts
82Lane County21.5+0.6 pts
83Woodson County21.5+0.2 pts
84Doniphan County21.5-0.4 pts
85Chautauqua County21.5+0.4 pts
86Chase County21.4+0.2 pts
87Ellis County21.3-0 pts
88Graham County21.1+0.3 pts
89Ness County21-0.8 pts
90Osborne County20.9+0.4 pts
91Morris County20.9-0.3 pts
92Rawlins County20.8+0.6 pts
93Greenwood County20.7-0.5 pts
94Rush County20.5+0.7 pts
95Pawnee County20.4+0.1 pts
96Trego County20.2+0.2 pts
97Smith County19.9+0.4 pts
98Jewell County19.8+0.5 pts
99Republic County19.8-0.2 pts
100Decatur County19.8-0.5 pts
101Elk County19.7-0.5 pts
102Douglas County19.6+0.1 pts
103Norton County19.1-0 pts
104Ellsworth County18.8-0 pts
105Riley County17-0.3 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, 2016) [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, 2016. 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=2016. 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, 2016. 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=2016.

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, 2016 [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=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kansas_by_2016,
  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, 2016}},
  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=2016. 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, 2016
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=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/kansas-counties?period=2016.
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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Rank Counties in Kansas by population under 18 using official data, and cite the source.
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Questions

Which county has the highest population under 18?

Grant County, with 31.6% in 2016, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Riley County, with 17% in 2016.

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