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 2020, at 29.1%. Payne County had the lowest, at 18.7%. The median was 24% and the figure for Oklahoma was 24.1%. Source: the U.S. Census Bureau.

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Highest29.1Texas County
Lowest18.7Payne County
Median2477 counties
Oklahoma24.1History

Map of counties, 2020

Adair County: 27.4 %Alfalfa County: 19.8 %Atoka County: 21.7 %Beaver County: 26.1 %Beckham County: 24.1 %Blaine County: 26 %Bryan County: 23.9 %Caddo County: 23 %Canadian County: 26.8 %Carter County: 24.2 %Cherokee County: 23.6 %Choctaw County: 23.7 %Cimarron County: 24.2 %Cleveland County: 22 %Coal County: 23.5 %Comanche County: 23.9 %Cotton County: 23.9 %Craig County: 21.8 %Creek County: 23.5 %Custer County: 25.2 %Delaware County: 20.4 %Dewey County: 25.7 %Ellis County: 22.3 %Garfield County: 26 %Garvin County: 24.8 %Grady County: 24 %Grant County: 23.9 %Greer County: 20.7 %Harmon County: 25.3 %Harper County: 25.4 %Haskell County: 24.1 %Hughes County: 21.5 %Jackson County: 24.7 %Jefferson County: 24 %Johnston County: 23 %Kay County: 24.3 %Kingfisher County: 26.9 %Kiowa County: 24.3 %Latimer County: 23.5 %Le Flore County: 24.1 %Lincoln County: 24 %Logan County: 25.1 %Love County: 23.5 %McClain County: 25.7 %McCurtain County: 25.7 %McIntosh County: 19.9 %Major County: 25.2 %Marshall County: 23.5 %Mayes County: 24.1 %Murray County: 23.6 %Muskogee County: 23.6 %Noble County: 23.3 %Nowata County: 23.1 %Okfuskee County: 21.7 %Oklahoma County: 24.9 %Okmulgee County: 23.4 %Osage County: 22.2 %Ottawa County: 24 %Pawnee County: 23.7 %Payne County: 18.7 %Pittsburg County: 22.4 %Pontotoc County: 24.1 %Pottawatomie County: 23.6 %Pushmataha County: 22.2 %Roger Mills County: 24.6 %Rogers County: 23.8 %Seminole County: 24.9 %Sequoyah County: 24.3 %Stephens County: 23.3 %Texas County: 29.1 %Tillman County: 24.8 %Tulsa County: 24.6 %Wagoner County: 25 %Washington County: 23.6 %Washita County: 25.9 %Woods County: 20 %Woodward County: 24.4 %
  • Under 22
  • 22 to 24
  • 24 to 25
  • 25 and over
%, 2020. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2020

Texas County: 29.1 %Texas County29.1Adair County: 27.4 %Adair County27.4Kingfisher County: 26.9 %Kingfisher County26.9Canadian County: 26.8 %Canadian County26.8Beaver County: 26.1 %Beaver County26.1Garfield County: 26 %Garfield County26Blaine County: 26 %Blaine County26Washita County: 25.9 %Washita County25.9McClain County: 25.7 %McClain County25.7McCurtain County: 25.7 %McCurtain County25.7Dewey County: 25.7 %Dewey County25.7Harper County: 25.4 %Harper County25.4Harmon County: 25.3 %Harmon County25.3Major County: 25.2 %Major County25.2Custer County: 25.2 %Custer County25.2Logan County: 25.1 %Logan County25.1Wagoner County: 25 %Wagoner County25Seminole County: 24.9 %Seminole County24.9Oklahoma County: 24.9 %Oklahoma County24.9Tillman County: 24.8 %Tillman County24.8Garvin County: 24.8 %Garvin County24.8Jackson County: 24.7 %Jackson County24.7Tulsa County: 24.6 %Tulsa County24.6Roger Mills County: 24.6 %Roger Mills County24.6Woodward County: 24.4 %Woodward County24.4Kiowa County: 24.3 %Kiowa County24.3Sequoyah County: 24.3 %Sequoyah County24.3Kay County: 24.3 %Kay County24.3Cimarron County: 24.2 %Cimarron County24.2Carter County: 24.2 %Carter County24.2Beckham County: 24.1 %Beckham County24.1Pontotoc County: 24.1 %Pontotoc County24.1Le Flore County: 24.1 %Le Flore County24.1Mayes County: 24.1 %Mayes County24.1Haskell County: 24.1 %Haskell County24.1Ottawa County: 24 %Ottawa County24Lincoln County: 24 %Lincoln County24Jefferson County: 24 %Jefferson County24Grady County: 24 %Grady County24Comanche County: 23.9 %Comanche County23.9Texas County: 29.1 %Texas County29.1Adair County: 27.4 %Adair County27.4Kingfisher County: 26.9 %Kingfisher County26.9Canadian County: 26.8 %Canadian County26.8Beaver County: 26.1 %Beaver County26.1Garfield County: 26 %Garfield County26Blaine County: 26 %Blaine County26Washita County: 25.9 %Washita County25.9McClain County: 25.7 %McClain County25.7McCurtain County: 25.7 %McCurtain County25.7Dewey County: 25.7 %Dewey County25.7Harper County: 25.4 %Harper County25.4Harmon County: 25.3 %Harmon County25.3Major County: 25.2 %Major County25.2Custer County: 25.2 %Custer County25.2Logan County: 25.1 %Logan County25.1Wagoner County: 25 %Wagoner County25Seminole County: 24.9 %Seminole County24.9Oklahoma County: 24.9 %Oklahoma County24.9Tillman County: 24.8 %Tillman County24.8Garvin County: 24.8 %Garvin County24.8Jackson County: 24.7 %Jackson County24.7Tulsa County: 24.6 %Tulsa County24.6Roger Mills County: 24.6 %Roger Mills County24.6Woodward County: 24.4 %Woodward County24.4Kiowa County: 24.3 %Kiowa County24.3Sequoyah County: 24.3 %Sequoyah County24.3Kay County: 24.3 %Kay County24.3Cimarron County: 24.2 %Cimarron County24.2Carter County: 24.2 %Carter County24.2Beckham County: 24.1 %Beckham County24.1Pontotoc County: 24.1 %Pontotoc County24.1Le Flore County: 24.1 %Le Flore County24.1Mayes County: 24.1 %Mayes County24.1Haskell County: 24.1 %Haskell County24.1Ottawa County: 24 %Ottawa County24Lincoln County: 24 %Lincoln County24Jefferson County: 24 %Jefferson County24Grady County: 24 %Grady County24Comanche County: 23.9 %Comanche County23.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2020 (%)Change on 2019
1Texas County29.1-0.1 pts
2Adair County27.4+1.1 pts
3Kingfisher County26.9-0 pts
4Canadian County26.8-0.2 pts
5Beaver County26.1+0.1 pts
6Garfield County26+0.1 pts
7Blaine County26+1 pts
8Washita County25.9+0.3 pts
9McClain County25.7-0.5 pts
10McCurtain County25.7+0.6 pts
11Dewey County25.7-0.6 pts
12Harper County25.4-0.2 pts
13Harmon County25.3+0.8 pts
14Major County25.2+0.1 pts
15Custer County25.2+0.5 pts
16Logan County25.1-0.6 pts
17Wagoner County25-0.4 pts
18Seminole County24.9+0.4 pts
19Oklahoma County24.9+0.2 pts
20Tillman County24.8+0.4 pts
21Garvin County24.8+0.5 pts
22Jackson County24.7+0.1 pts
23Tulsa County24.60 pts
24Roger Mills County24.6+0.6 pts
25Woodward County24.40 pts
26Kiowa County24.3+1.3 pts
27Sequoyah County24.3+0.6 pts
28Kay County24.3-0.1 pts
29Cimarron County24.2-0.2 pts
30Carter County24.2+0.6 pts
31Beckham County24.1+0.2 pts
32Pontotoc County24.1+0.3 pts
33Le Flore County24.1+0.1 pts
33Mayes County24.10 pts
35Haskell County24.10 pts
36Ottawa County24+0.6 pts
37Lincoln County24-0.2 pts
38Jefferson County24+0.4 pts
39Grady County24-0.2 pts
40Comanche County23.9-0 pts
41Cotton County23.9+1.1 pts
42Grant County23.9+0.7 pts
43Bryan County23.9+0.4 pts
44Rogers County23.8-0.2 pts
45Pawnee County23.7+0.1 pts
46Choctaw County23.7+1.1 pts
47Muskogee County23.6+0.5 pts
48Washington County23.6+0.2 pts
49Murray County23.6+0.4 pts
50Pottawatomie County23.6-0 pts
51Cherokee County23.6+0.1 pts
52Marshall County23.5+0.4 pts
53Love County23.5+0.8 pts
54Creek County23.5-0.1 pts
55Latimer County23.5+1.2 pts
56Coal County23.5+1.2 pts
57Okmulgee County23.4+0.2 pts
58Noble County23.3-0.2 pts
59Stephens County23.30 pts
60Nowata County23.1+0.6 pts
61Caddo County23+1 pts
62Johnston County23+0.2 pts
63Pittsburg County22.4+0.4 pts
64Ellis County22.3-0.8 pts
65Osage County22.2-0.3 pts
66Pushmataha County22.2-0 pts
67Cleveland County22-0.8 pts
68Craig County21.8+0.6 pts
69Okfuskee County21.7+0.4 pts
70Atoka County21.7+0.4 pts
71Hughes County21.5+0.3 pts
72Greer County20.7+0.2 pts
73Delaware County20.4+0.1 pts
74Woods County20+0.5 pts
75McIntosh County19.9+0.6 pts
76Alfalfa County19.8-0 pts
77Payne County18.7-0.1 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 Oklahoma by population under 18, 2020) [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, 2020. 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=2020. 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, 2020. 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=2020.

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, 2020 [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=2020 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_oklahoma_by_2020,
  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, 2020}},
  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=2020. 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, 2020
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=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/oklahoma-counties?period=2020.
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 29.1% in 2020, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Payne County, with 18.7% in 2020.

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