Data / Rankings / Population under 18 / Counties in Oklahoma

Counties in Oklahoma by population under 18

Texas County had the highest population under 18 of 77 counties in 2018, at 29%. Payne County had the lowest, at 19%. The median was 23.9% and the figure for Oklahoma was 24.2%. Source: the U.S. Census Bureau.

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Highest29Texas County
Lowest19Payne County
Median23.977 counties
Oklahoma24.2History

Map of counties, 2018

Adair County: 26.3 %Alfalfa County: 19.7 %Atoka County: 21.5 %Beaver County: 26.3 %Beckham County: 23.6 %Blaine County: 24.7 %Bryan County: 23.7 %Caddo County: 22.4 %Canadian County: 27.1 %Carter County: 23.9 %Cherokee County: 23.3 %Choctaw County: 22.8 %Cimarron County: 24 %Cleveland County: 22.9 %Coal County: 22.7 %Comanche County: 23.8 %Cotton County: 23.2 %Craig County: 21.6 %Creek County: 24.1 %Custer County: 24.8 %Delaware County: 20.6 %Dewey County: 26.1 %Ellis County: 22.9 %Garfield County: 25.8 %Garvin County: 24.4 %Grady County: 24.4 %Grant County: 23.2 %Greer County: 21 %Harmon County: 25.7 %Harper County: 25.7 %Haskell County: 24.4 %Hughes County: 21.2 %Jackson County: 24.8 %Jefferson County: 24 %Johnston County: 22.5 %Kay County: 24.6 %Kingfisher County: 27.3 %Kiowa County: 23 %Latimer County: 21.8 %Le Flore County: 24.3 %Lincoln County: 24.4 %Logan County: 25.8 %Love County: 22.9 %McClain County: 26.1 %McCurtain County: 25.3 %McIntosh County: 20 %Major County: 25.1 %Marshall County: 23.4 %Mayes County: 24.1 %Murray County: 23.2 %Muskogee County: 23.3 %Noble County: 23.6 %Nowata County: 23 %Okfuskee County: 21.4 %Oklahoma County: 24.9 %Okmulgee County: 23.4 %Osage County: 22.7 %Ottawa County: 23.7 %Pawnee County: 24 %Payne County: 19 %Pittsburg County: 21.9 %Pontotoc County: 23.9 %Pottawatomie County: 23.9 %Pushmataha County: 22.4 %Roger Mills County: 25.2 %Rogers County: 24.2 %Seminole County: 24.7 %Sequoyah County: 24 %Stephens County: 23.3 %Texas County: 29 %Tillman County: 24.2 %Tulsa County: 24.8 %Wagoner County: 25.5 %Washington County: 23.5 %Washita County: 26.2 %Woods County: 19.4 %Woodward County: 24.5 %
  • Under 22
  • 22 to 23
  • 23 to 24
  • 24 to 25
  • 25 and over
%, 2018. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2018

Texas County: 29 %Texas County29Kingfisher County: 27.3 %Kingfisher County27.3Canadian County: 27.1 %Canadian County27.1Adair County: 26.3 %Adair County26.3Beaver County: 26.3 %Beaver County26.3Washita County: 26.2 %Washita County26.2McClain County: 26.1 %McClain County26.1Dewey County: 26.1 %Dewey County26.1Garfield County: 25.8 %Garfield County25.8Logan County: 25.8 %Logan County25.8Harmon County: 25.7 %Harmon County25.7Harper County: 25.7 %Harper County25.7Wagoner County: 25.5 %Wagoner County25.5McCurtain County: 25.3 %McCurtain County25.3Roger Mills County: 25.2 %Roger Mills County25.2Major County: 25.1 %Major County25.1Oklahoma County: 24.9 %Oklahoma County24.9Tulsa County: 24.8 %Tulsa County24.8Custer County: 24.8 %Custer County24.8Jackson County: 24.8 %Jackson County24.8Blaine County: 24.7 %Blaine County24.7Seminole County: 24.7 %Seminole County24.7Kay County: 24.6 %Kay County24.6Woodward County: 24.5 %Woodward County24.5Grady County: 24.4 %Grady County24.4Garvin County: 24.4 %Garvin County24.4Haskell County: 24.4 %Haskell County24.4Lincoln County: 24.4 %Lincoln County24.4Le Flore County: 24.3 %Le Flore County24.3Tillman County: 24.2 %Tillman County24.2Rogers County: 24.2 %Rogers County24.2Mayes County: 24.1 %Mayes County24.1Creek County: 24.1 %Creek County24.1Pawnee County: 24 %Pawnee County24Cimarron County: 24 %Cimarron County24Jefferson County: 24 %Jefferson County24Sequoyah County: 24 %Sequoyah County24Pontotoc County: 23.9 %Pontotoc County23.9Carter County: 23.9 %Carter County23.9Pottawatomie County: 23.9 %Pottawatomie County23.9Texas County: 29 %Texas County29Kingfisher County: 27.3 %Kingfisher County27.3Canadian County: 27.1 %Canadian County27.1Adair County: 26.3 %Adair County26.3Beaver County: 26.3 %Beaver County26.3Washita County: 26.2 %Washita County26.2McClain County: 26.1 %McClain County26.1Dewey County: 26.1 %Dewey County26.1Garfield County: 25.8 %Garfield County25.8Logan County: 25.8 %Logan County25.8Harmon County: 25.7 %Harmon County25.7Harper County: 25.7 %Harper County25.7Wagoner County: 25.5 %Wagoner County25.5McCurtain County: 25.3 %McCurtain County25.3Roger Mills County: 25.2 %Roger Mills County25.2Major County: 25.1 %Major County25.1Oklahoma County: 24.9 %Oklahoma County24.9Tulsa County: 24.8 %Tulsa County24.8Custer County: 24.8 %Custer County24.8Jackson County: 24.8 %Jackson County24.8Blaine County: 24.7 %Blaine County24.7Seminole County: 24.7 %Seminole County24.7Kay County: 24.6 %Kay County24.6Woodward County: 24.5 %Woodward County24.5Grady County: 24.4 %Grady County24.4Garvin County: 24.4 %Garvin County24.4Haskell County: 24.4 %Haskell County24.4Lincoln County: 24.4 %Lincoln County24.4Le Flore County: 24.3 %Le Flore County24.3Tillman County: 24.2 %Tillman County24.2Rogers County: 24.2 %Rogers County24.2Mayes County: 24.1 %Mayes County24.1Creek County: 24.1 %Creek County24.1Pawnee County: 24 %Pawnee County24Cimarron County: 24 %Cimarron County24Jefferson County: 24 %Jefferson County24Sequoyah County: 24 %Sequoyah County24Pontotoc County: 23.9 %Pontotoc County23.9Carter County: 23.9 %Carter County23.9Pottawatomie County: 23.9 %Pottawatomie County23.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Texas County29+0.1 pts
2Kingfisher County27.3+0.2 pts
3Canadian County27.1+0.2 pts
4Adair County26.3+0.1 pts
5Beaver County26.3-0.3 pts
6Washita County26.2+0.4 pts
7McClain County26.10 pts
8Dewey County26.1-0.3 pts
9Garfield County25.8-0.1 pts
10Logan County25.8-0.1 pts
11Harmon County25.7+0.8 pts
12Harper County25.7-0.6 pts
13Wagoner County25.5-0.1 pts
14McCurtain County25.3-0.1 pts
15Roger Mills County25.2-0.5 pts
16Major County25.1+0.1 pts
17Oklahoma County24.9-0.2 pts
18Tulsa County24.8-0.2 pts
19Custer County24.80 pts
20Jackson County24.8-0.5 pts
21Blaine County24.7-0.4 pts
22Seminole County24.7-0.4 pts
23Kay County24.6-0.1 pts
24Woodward County24.5-0.1 pts
25Grady County24.4-0.1 pts
26Garvin County24.4-0.3 pts
27Haskell County24.4-0.4 pts
28Lincoln County24.4-0.5 pts
29Le Flore County24.3-0 pts
30Tillman County24.2-0.4 pts
31Rogers County24.2-0.2 pts
32Mayes County24.1-0.1 pts
33Creek County24.1-0.2 pts
34Pawnee County240 pts
35Cimarron County24-0.7 pts
36Jefferson County24+0.2 pts
37Sequoyah County24-0.1 pts
38Pontotoc County23.9-0 pts
39Carter County23.9-0.5 pts
40Pottawatomie County23.9-0.2 pts
41Comanche County23.8-0.2 pts
42Ottawa County23.7-0.4 pts
43Bryan County23.7-0.1 pts
44Noble County23.6-0 pts
45Beckham County23.6-0.2 pts
46Washington County23.5-0.2 pts
47Marshall County23.4+0.2 pts
48Okmulgee County23.4-0.5 pts
49Cherokee County23.3-0.4 pts
50Muskogee County23.3-0.2 pts
51Stephens County23.3-0.1 pts
52Murray County23.2+0.1 pts
53Grant County23.2+0.1 pts
54Cotton County23.2+0.2 pts
55Kiowa County23+0.1 pts
56Nowata County23+0.1 pts
57Ellis County22.9+0.2 pts
58Cleveland County22.9-0.2 pts
59Love County22.9-0.5 pts
60Choctaw County22.8-0.3 pts
61Osage County22.7-0.2 pts
62Coal County22.7+0.2 pts
63Johnston County22.5-0.2 pts
64Pushmataha County22.4-0.1 pts
65Caddo County22.4-0.6 pts
66Pittsburg County21.9-0 pts
67Latimer County21.8-0.2 pts
68Craig County21.6-0.3 pts
69Atoka County21.5-0.1 pts
70Okfuskee County21.4-0.3 pts
71Hughes County21.2+0.2 pts
72Greer County21+0.4 pts
73Delaware County20.6-0.3 pts
74McIntosh County200 pts
75Alfalfa County19.7-0.5 pts
76Woods County19.4-0.5 pts
77Payne County19-0 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 Oklahoma by population under 18, 2018) [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 Oklahoma by population under 18, 2018. 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/oklahoma-counties?period=2018. 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 Oklahoma by population under 18, 2018. 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/oklahoma-counties?period=2018.

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 Oklahoma by population under 18, 2018 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/oklahoma-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_oklahoma_by_2018,
  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 Oklahoma by population under 18, 2018}},
  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/oklahoma-counties?period=2018. 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 Oklahoma by population under 18, 2018
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/oklahoma-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/oklahoma-counties?period=2018.
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 Oklahoma by population under 18 using official data, and cite the source.
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Questions

Which county has the highest population under 18?

Texas County, with 29% in 2018, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Payne County, with 19% in 2018.

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 Oklahoma: more rankings