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 2021, at 28.6%. Payne County had the lowest, at 18.3%. The median was 23.9% and the figure for Oklahoma was 24%. Source: the U.S. Census Bureau.

Highest28.6Texas County
Lowest18.3Payne County
Median23.977 counties
Oklahoma24History

Top 40 counties, 2021

Texas County: 28.6 %Texas County28.6Adair County: 27.4 %Adair County27.4Kingfisher County: 26.7 %Kingfisher County26.7Canadian County: 26.6 %Canadian County26.6Blaine County: 26.1 %Blaine County26.1Garfield County: 26 %Garfield County26McCurtain County: 25.9 %McCurtain County25.9Washita County: 25.9 %Washita County25.9Dewey County: 25.8 %Dewey County25.8McClain County: 25.5 %McClain County25.5Beaver County: 25.3 %Beaver County25.3Harmon County: 25.2 %Harmon County25.2Major County: 25 %Major County25Custer County: 25 %Custer County25Garvin County: 24.9 %Garvin County24.9Seminole County: 24.8 %Seminole County24.8Logan County: 24.8 %Logan County24.8Oklahoma County: 24.7 %Oklahoma County24.7Jackson County: 24.7 %Jackson County24.7Wagoner County: 24.7 %Wagoner County24.7Tillman County: 24.6 %Tillman County24.6Tulsa County: 24.5 %Tulsa County24.5Ottawa County: 24.4 %Ottawa County24.4Kay County: 24.4 %Kay County24.4Harper County: 24.4 %Harper County24.4Sequoyah County: 24.4 %Sequoyah County24.4Carter County: 24.3 %Carter County24.3Roger Mills County: 24.2 %Roger Mills County24.2Choctaw County: 24.2 %Choctaw County24.2Pontotoc County: 24.2 %Pontotoc County24.2Mayes County: 24.1 %Mayes County24.1Le Flore County: 24.1 %Le Flore County24.1Woodward County: 24.1 %Woodward County24.1Lincoln County: 24.1 %Lincoln County24.1Kiowa County: 24 %Kiowa County24Comanche County: 24 %Comanche County24Pawnee County: 24 %Pawnee County24Beckham County: 23.9 %Beckham County23.9Haskell County: 23.9 %Haskell County23.9Grady County: 23.9 %Grady County23.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)Change on 2020
1Texas County28.6-0.5 pts
2Adair County27.4-0 pts
3Kingfisher County26.7-0.2 pts
4Canadian County26.6-0.2 pts
5Blaine County26.1+0.1 pts
6Garfield County26-0 pts
7McCurtain County25.9+0.2 pts
8Washita County25.90 pts
9Dewey County25.8+0.1 pts
10McClain County25.5-0.3 pts
11Beaver County25.3-0.8 pts
12Harmon County25.2-0.1 pts
13Major County25-0.2 pts
14Custer County25-0.3 pts
15Garvin County24.9+0.1 pts
16Seminole County24.8-0.1 pts
17Logan County24.8-0.4 pts
18Oklahoma County24.7-0.2 pts
19Jackson County24.70 pts
20Wagoner County24.7-0.3 pts
21Tillman County24.6-0.2 pts
22Tulsa County24.5-0.2 pts
23Ottawa County24.4+0.4 pts
24Kay County24.4+0.1 pts
25Harper County24.4-1.1 pts
26Sequoyah County24.40 pts
27Carter County24.3+0.1 pts
28Roger Mills County24.2-0.4 pts
29Choctaw County24.2+0.5 pts
30Pontotoc County24.2+0.1 pts
31Mayes County24.10 pts
32Le Flore County24.10 pts
33Woodward County24.1-0.3 pts
34Lincoln County24.1+0.1 pts
35Kiowa County24-0.3 pts
36Comanche County24+0.1 pts
37Pawnee County24+0.2 pts
38Beckham County23.9-0.2 pts
39Haskell County23.9-0.1 pts
40Grady County23.9-0 pts
41Cotton County23.8-0.1 pts
42Jefferson County23.8-0.2 pts
43Bryan County23.7-0.1 pts
44Nowata County23.7+0.7 pts
45Washington County23.7+0.1 pts
46Grant County23.6-0.3 pts
47Rogers County23.6-0.2 pts
48Muskogee County23.6-0.1 pts
49Cimarron County23.5-0.7 pts
50Pottawatomie County23.5-0.1 pts
51Marshall County23.4-0.1 pts
52Coal County23.4-0.1 pts
53Okmulgee County23.4-0 pts
54Murray County23.4-0.2 pts
55Love County23.3-0.2 pts
56Noble County23.3-0 pts
57Latimer County23.3-0.2 pts
58Cherokee County23.2-0.3 pts
59Stephens County23.2-0.1 pts
60Creek County23.2-0.3 pts
61Johnston County23.2+0.2 pts
62Ellis County22.6+0.3 pts
63Caddo County22.6-0.4 pts
64Pittsburg County22.3-0.1 pts
65Craig County22.1+0.3 pts
66Osage County21.8-0.4 pts
67Pushmataha County21.7-0.4 pts
68Cleveland County21.6-0.5 pts
69Okfuskee County21.4-0.3 pts
70Atoka County21.4-0.3 pts
71Hughes County21.3-0.2 pts
72Delaware County20.2-0.1 pts
73McIntosh County20.2+0.3 pts
74Greer County20.2-0.6 pts
75Woods County19.9-0.1 pts
76Alfalfa County19.5-0.3 pts
77Payne County18.3-0.3 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.

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, 2021) [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, 2021. 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=2021. 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, 2021. 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=2021.

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, 2021 [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=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_oklahoma_by_2021,
  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, 2021}},
  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=2021. 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, 2021
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=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/oklahoma-counties?period=2021.
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?

Texas County, with 28.6% in 2021, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Payne County, with 18.3% in 2021.

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