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 2017, at 31.5%. Riley County had the lowest, at 17.2%. The median was 23.6% and the figure for Kansas was 24.6%. Source: the U.S. Census Bureau.

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Highest31.5Grant County
Lowest17.2Riley County
Median23.6105 counties
Kansas24.6History

Map of counties, 2017

Allen County: 22.1 %Anderson County: 25.1 %Atchison County: 22.9 %Barber County: 22.1 %Barton County: 24.1 %Bourbon County: 25.3 %Brown County: 24.5 %Butler County: 26.2 %Chase County: 21.4 %Chautauqua County: 21.2 %Cherokee County: 23.3 %Cheyenne County: 22.5 %Clark County: 22.8 %Clay County: 22.5 %Cloud County: 22.2 %Coffey County: 23.1 %Comanche County: 24.5 %Cowley County: 24 %Crawford County: 22.4 %Decatur County: 20.3 %Dickinson County: 24.4 %Doniphan County: 21.6 %Douglas County: 19.3 %Edwards County: 22.5 %Elk County: 20.4 %Ellis County: 21.1 %Ellsworth County: 19.3 %Finney County: 30.2 %Ford County: 31.2 %Franklin County: 24.4 %Geary County: 29.9 %Gove County: 25 %Graham County: 20.4 %Grant County: 31.5 %Gray County: 28.8 %Greeley County: 24 %Greenwood County: 21.4 %Hamilton County: 30.5 %Harper County: 24.3 %Harvey County: 24.2 %Haskell County: 30.4 %Hodgeman County: 23.8 %Jackson County: 25.4 %Jefferson County: 23.6 %Jewell County: 19.6 %Johnson County: 25 %Kearny County: 28.3 %Kingman County: 22.7 %Kiowa County: 22.1 %Labette County: 24.6 %Lane County: 20.6 %Leavenworth County: 24.2 %Lincoln County: 23.7 %Linn County: 23.7 %Logan County: 24.2 %Lyon County: 22.5 %McPherson County: 22.8 %Marion County: 21.9 %Marshall County: 23.4 %Meade County: 26.7 %Miami County: 25.1 %Mitchell County: 22.6 %Montgomery County: 23.8 %Morris County: 20.7 %Morton County: 25 %Nemaha County: 25.8 %Neosho County: 24.9 %Ness County: 20.2 %Norton County: 18.9 %Osage County: 23.2 %Osborne County: 21.3 %Ottawa County: 23.1 %Pawnee County: 20.6 %Phillips County: 22.6 %Pottawatomie County: 29.1 %Pratt County: 24.2 %Rawlins County: 20.6 %Reno County: 22.8 %Republic County: 20.4 %Rice County: 23.4 %Riley County: 17.2 %Rooks County: 22.2 %Rush County: 21.7 %Russell County: 22 %Saline County: 23.6 %Scott County: 26.7 %Sedgwick County: 25.8 %Seward County: 31.2 %Shawnee County: 24 %Sheridan County: 25.3 %Sherman County: 23.6 %Smith County: 19.9 %Stafford County: 23.9 %Stanton County: 28.7 %Stevens County: 29.5 %Sumner County: 24.8 %Thomas County: 23.5 %Trego County: 20 %Wabaunsee County: 24.2 %Wallace County: 24.5 %Washington County: 22.5 %Wichita County: 26.5 %Wilson County: 24 %Woodson County: 21.2 %Wyandotte County: 27.6 %
  • Under 21
  • 21 to 23
  • 23 to 24
  • 24 to 26
  • 26 and over
%, 2017. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2017

Grant County: 31.5 %Grant County31.5Seward County: 31.2 %Seward County31.2Ford County: 31.2 %Ford County31.2Hamilton County: 30.5 %Hamilton County30.5Haskell County: 30.4 %Haskell County30.4Finney County: 30.2 %Finney County30.2Geary County: 29.9 %Geary County29.9Stevens County: 29.5 %Stevens County29.5Pottawatomie County: 29.1 %Pottawatomie County29.1Gray County: 28.8 %Gray County28.8Stanton County: 28.7 %Stanton County28.7Kearny County: 28.3 %Kearny County28.3Wyandotte County: 27.6 %Wyandotte County27.6Scott County: 26.7 %Scott County26.7Meade County: 26.7 %Meade County26.7Wichita County: 26.5 %Wichita County26.5Butler County: 26.2 %Butler County26.2Nemaha County: 25.8 %Nemaha County25.8Sedgwick County: 25.8 %Sedgwick County25.8Jackson County: 25.4 %Jackson County25.4Sheridan County: 25.3 %Sheridan County25.3Bourbon County: 25.3 %Bourbon County25.3Anderson County: 25.1 %Anderson County25.1Miami County: 25.1 %Miami County25.1Morton County: 25 %Morton County25Gove County: 25 %Gove County25Johnson County: 25 %Johnson County25Neosho County: 24.9 %Neosho County24.9Sumner County: 24.8 %Sumner County24.8Labette County: 24.6 %Labette County24.6Brown County: 24.5 %Brown County24.5Wallace County: 24.5 %Wallace County24.5Comanche County: 24.5 %Comanche County24.5Dickinson County: 24.4 %Dickinson County24.4Franklin County: 24.4 %Franklin County24.4Harper County: 24.3 %Harper County24.3Pratt County: 24.2 %Pratt County24.2Harvey County: 24.2 %Harvey County24.2Leavenworth County: 24.2 %Leavenworth County24.2Wabaunsee County: 24.2 %Wabaunsee County24.2Grant County: 31.5 %Grant County31.5Seward County: 31.2 %Seward County31.2Ford County: 31.2 %Ford County31.2Hamilton County: 30.5 %Hamilton County30.5Haskell County: 30.4 %Haskell County30.4Finney County: 30.2 %Finney County30.2Geary County: 29.9 %Geary County29.9Stevens County: 29.5 %Stevens County29.5Pottawatomie County: 29.1 %Pottawatomie County29.1Gray County: 28.8 %Gray County28.8Stanton County: 28.7 %Stanton County28.7Kearny County: 28.3 %Kearny County28.3Wyandotte County: 27.6 %Wyandotte County27.6Scott County: 26.7 %Scott County26.7Meade County: 26.7 %Meade County26.7Wichita County: 26.5 %Wichita County26.5Butler County: 26.2 %Butler County26.2Nemaha County: 25.8 %Nemaha County25.8Sedgwick County: 25.8 %Sedgwick County25.8Jackson County: 25.4 %Jackson County25.4Sheridan County: 25.3 %Sheridan County25.3Bourbon County: 25.3 %Bourbon County25.3Anderson County: 25.1 %Anderson County25.1Miami County: 25.1 %Miami County25.1Morton County: 25 %Morton County25Gove County: 25 %Gove County25Johnson County: 25 %Johnson County25Neosho County: 24.9 %Neosho County24.9Sumner County: 24.8 %Sumner County24.8Labette County: 24.6 %Labette County24.6Brown County: 24.5 %Brown County24.5Wallace County: 24.5 %Wallace County24.5Comanche County: 24.5 %Comanche County24.5Dickinson County: 24.4 %Dickinson County24.4Franklin County: 24.4 %Franklin County24.4Harper County: 24.3 %Harper County24.3Pratt County: 24.2 %Pratt County24.2Harvey County: 24.2 %Harvey County24.2Leavenworth County: 24.2 %Leavenworth County24.2Wabaunsee County: 24.2 %Wabaunsee County24.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2017 (%)Change on 2016
1Grant County31.5-0.2 pts
2Seward County31.2+0.1 pts
3Ford County31.2+0.3 pts
4Hamilton County30.5-0.1 pts
5Haskell County30.4+0.6 pts
6Finney County30.2-0.5 pts
7Geary County29.9-0.1 pts
8Stevens County29.5-0.6 pts
9Pottawatomie County29.1-0.2 pts
10Gray County28.8-0.7 pts
11Stanton County28.7-0.9 pts
12Kearny County28.3+0.3 pts
13Wyandotte County27.6-0.1 pts
14Scott County26.7+0.2 pts
15Meade County26.7+0.1 pts
16Wichita County26.5-0.4 pts
17Butler County26.2-0 pts
18Nemaha County25.8+0.1 pts
19Sedgwick County25.8-0.2 pts
20Jackson County25.40 pts
21Sheridan County25.3+1.2 pts
22Bourbon County25.3+0.3 pts
23Anderson County25.1+0.5 pts
24Miami County25.1-0.2 pts
25Morton County25-0.7 pts
26Gove County25+0.3 pts
27Johnson County25-0.2 pts
28Neosho County24.9-0 pts
29Sumner County24.8+0.1 pts
30Labette County24.6+0.4 pts
31Brown County24.5-0.2 pts
32Wallace County24.5-0.1 pts
33Comanche County24.5-0.6 pts
34Dickinson County24.4-0.2 pts
35Franklin County24.4-0.1 pts
36Harper County24.30 pts
37Pratt County24.2-0.3 pts
38Harvey County24.2-0.4 pts
38Leavenworth County24.2-0.1 pts
40Wabaunsee County24.2-0.8 pts
41Logan County24.2+0.3 pts
42Barton County24.1-0.3 pts
43Cowley County24-0.1 pts
44Wilson County24+0.6 pts
45Greeley County24-0.1 pts
46Shawnee County24-0.2 pts
47Stafford County23.9-0.1 pts
48Hodgeman County23.8+0.6 pts
49Montgomery County23.8-0.1 pts
50Linn County23.7-0.1 pts
51Lincoln County23.7-0.4 pts
52Jefferson County23.6-0.2 pts
53Saline County23.6-0.2 pts
54Sherman County23.6-0 pts
55Thomas County23.5+0.3 pts
56Marshall County23.4-0.3 pts
57Rice County23.4-0.3 pts
58Cherokee County23.3-0.4 pts
59Osage County23.2-0.2 pts
60Coffey County23.1-0.6 pts
61Ottawa County23.1-0.8 pts
62Atchison County22.9+0.1 pts
63Clark County22.8-0.8 pts
64Reno County22.8-0.2 pts
65McPherson County22.80 pts
66Kingman County22.7+0.1 pts
67Phillips County22.6-0.1 pts
68Mitchell County22.6-0.1 pts
69Clay County22.5-0.6 pts
70Washington County22.5-0.3 pts
71Edwards County22.5-0.5 pts
72Cheyenne County22.5+0.4 pts
73Lyon County22.5-0 pts
74Crawford County22.4-0.1 pts
75Cloud County22.2-0.1 pts
76Rooks County22.2-0.2 pts
77Allen County22.1-0.2 pts
78Kiowa County22.1+0.1 pts
79Barber County22.1+0.4 pts
80Russell County22+0.2 pts
81Marion County21.9-0.1 pts
82Rush County21.7+1.2 pts
83Doniphan County21.6+0.1 pts
84Greenwood County21.4+0.7 pts
85Chase County21.4-0 pts
86Osborne County21.3+0.4 pts
87Woodson County21.2-0.3 pts
88Chautauqua County21.2-0.3 pts
89Ellis County21.1-0.2 pts
90Morris County20.7-0.2 pts
91Rawlins County20.6-0.1 pts
92Lane County20.6-0.9 pts
93Pawnee County20.6+0.2 pts
94Elk County20.4+0.8 pts
95Republic County20.4+0.6 pts
96Graham County20.4-0.7 pts
97Decatur County20.3+0.5 pts
98Ness County20.2-0.9 pts
99Trego County20-0.1 pts
100Smith County19.90 pts
101Jewell County19.6-0.2 pts
102Douglas County19.3-0.2 pts
103Ellsworth County19.3+0.5 pts
104Norton County18.9-0.2 pts
105Riley County17.2+0.2 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, 2017) [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, 2017. 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=2017. 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, 2017. 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=2017.

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, 2017 [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=2017 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kansas_by_2017,
  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, 2017}},
  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=2017. 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, 2017
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=2017
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/kansas-counties?period=2017.
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 31.5% in 2017, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Riley County, with 17.2% in 2017.

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