Data / Rankings / High school graduate or higher, population 25 and over / Counties in Oklahoma

Counties in Oklahoma by high school graduate or higher, population 25 and over

Dewey County had the highest high school graduate or higher, population 25 and over of 77 counties in 2021, at 92.6%. Texas County had the lowest, at 73.2%. The median was 87.2% and the figure for Oklahoma was 88.8%. Source: the U.S. Census Bureau.

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Highest92.6Dewey County
Lowest73.2Texas County
Median87.277 counties
Oklahoma88.8History

Map of counties, 2021

Adair County: 81 %Alfalfa County: 85.6 %Atoka County: 83.7 %Beaver County: 84.9 %Beckham County: 85.2 %Blaine County: 83 %Bryan County: 87.1 %Caddo County: 85.7 %Canadian County: 92.1 %Carter County: 87.2 %Cherokee County: 88.2 %Choctaw County: 83.7 %Cimarron County: 86.2 %Cleveland County: 92 %Coal County: 84.9 %Comanche County: 90.6 %Cotton County: 83.6 %Craig County: 86.9 %Creek County: 89.8 %Custer County: 88.2 %Delaware County: 85.2 %Dewey County: 92.6 %Ellis County: 87.8 %Garfield County: 88.2 %Garvin County: 88.2 %Grady County: 90.2 %Grant County: 90.9 %Greer County: 82.9 %Harmon County: 81.7 %Harper County: 89.2 %Haskell County: 84.7 %Hughes County: 83.3 %Jackson County: 86.4 %Jefferson County: 83.5 %Johnston County: 87.2 %Kay County: 88.3 %Kingfisher County: 89.2 %Kiowa County: 86 %Latimer County: 86.4 %Le Flore County: 84.2 %Lincoln County: 89 %Logan County: 91.6 %Love County: 84.3 %McClain County: 89.3 %McCurtain County: 84.1 %McIntosh County: 86.3 %Major County: 89.5 %Marshall County: 81.3 %Mayes County: 88.1 %Murray County: 85.7 %Muskogee County: 86.3 %Noble County: 89.6 %Nowata County: 89.1 %Okfuskee County: 81.8 %Oklahoma County: 88.4 %Okmulgee County: 86.6 %Osage County: 89.3 %Ottawa County: 86.3 %Pawnee County: 88.8 %Payne County: 92.1 %Pittsburg County: 87 %Pontotoc County: 89.4 %Pottawatomie County: 88.7 %Pushmataha County: 85.5 %Roger Mills County: 91.3 %Rogers County: 91.9 %Seminole County: 84 %Sequoyah County: 82.5 %Stephens County: 87.9 %Texas County: 73.2 %Tillman County: 79 %Tulsa County: 89.8 %Wagoner County: 91 %Washington County: 90.5 %Washita County: 89.6 %Woods County: 91.5 %Woodward County: 87.9 %
  • Under 84
  • 84 to 86
  • 86 to 87
  • 87 to 89
  • 89 to 90
  • 90 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Dewey County: 92.6 %Dewey County92.6Payne County: 92.1 %Payne County92.1Canadian County: 92.1 %Canadian County92.1Cleveland County: 92 %Cleveland County92Rogers County: 91.9 %Rogers County91.9Logan County: 91.6 %Logan County91.6Woods County: 91.5 %Woods County91.5Roger Mills County: 91.3 %Roger Mills County91.3Wagoner County: 91 %Wagoner County91Grant County: 90.9 %Grant County90.9Comanche County: 90.6 %Comanche County90.6Washington County: 90.5 %Washington County90.5Grady County: 90.2 %Grady County90.2Tulsa County: 89.8 %Tulsa County89.8Creek County: 89.8 %Creek County89.8Washita County: 89.6 %Washita County89.6Noble County: 89.6 %Noble County89.6Major County: 89.5 %Major County89.5Pontotoc County: 89.4 %Pontotoc County89.4Osage County: 89.3 %Osage County89.3McClain County: 89.3 %McClain County89.3Harper County: 89.2 %Harper County89.2Kingfisher County: 89.2 %Kingfisher County89.2Nowata County: 89.1 %Nowata County89.1Lincoln County: 89 %Lincoln County89Pawnee County: 88.8 %Pawnee County88.8Pottawatomie County: 88.7 %Pottawatomie County88.7Oklahoma County: 88.4 %Oklahoma County88.4Kay County: 88.3 %Kay County88.3Custer County: 88.2 %Custer County88.2Cherokee County: 88.2 %Cherokee County88.2Garfield County: 88.2 %Garfield County88.2Garvin County: 88.2 %Garvin County88.2Mayes County: 88.1 %Mayes County88.1Woodward County: 87.9 %Woodward County87.9Stephens County: 87.9 %Stephens County87.9Ellis County: 87.8 %Ellis County87.8Carter County: 87.2 %Carter County87.2Johnston County: 87.2 %Johnston County87.2Bryan County: 87.1 %Bryan County87.1Dewey County: 92.6 %Dewey County92.6Payne County: 92.1 %Payne County92.1Canadian County: 92.1 %Canadian County92.1Cleveland County: 92 %Cleveland County92Rogers County: 91.9 %Rogers County91.9Logan County: 91.6 %Logan County91.6Woods County: 91.5 %Woods County91.5Roger Mills County: 91.3 %Roger Mills County91.3Wagoner County: 91 %Wagoner County91Grant County: 90.9 %Grant County90.9Comanche County: 90.6 %Comanche County90.6Washington County: 90.5 %Washington County90.5Grady County: 90.2 %Grady County90.2Tulsa County: 89.8 %Tulsa County89.8Creek County: 89.8 %Creek County89.8Washita County: 89.6 %Washita County89.6Noble County: 89.6 %Noble County89.6Major County: 89.5 %Major County89.5Pontotoc County: 89.4 %Pontotoc County89.4Osage County: 89.3 %Osage County89.3McClain County: 89.3 %McClain County89.3Harper County: 89.2 %Harper County89.2Kingfisher County: 89.2 %Kingfisher County89.2Nowata County: 89.1 %Nowata County89.1Lincoln County: 89 %Lincoln County89Pawnee County: 88.8 %Pawnee County88.8Pottawatomie County: 88.7 %Pottawatomie County88.7Oklahoma County: 88.4 %Oklahoma County88.4Kay County: 88.3 %Kay County88.3Custer County: 88.2 %Custer County88.2Cherokee County: 88.2 %Cherokee County88.2Garfield County: 88.2 %Garfield County88.2Garvin County: 88.2 %Garvin County88.2Mayes County: 88.1 %Mayes County88.1Woodward County: 87.9 %Woodward County87.9Stephens County: 87.9 %Stephens County87.9Ellis County: 87.8 %Ellis County87.8Carter County: 87.2 %Carter County87.2Johnston County: 87.2 %Johnston County87.2Bryan County: 87.1 %Bryan County87.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Dewey County92.6
2Payne County92.1
3Canadian County92.1
4Cleveland County92
5Rogers County91.9
6Logan County91.6
7Woods County91.5
8Roger Mills County91.3
9Wagoner County91
10Grant County90.9
11Comanche County90.6
12Washington County90.5
13Grady County90.2
14Tulsa County89.8
15Creek County89.8
16Washita County89.6
17Noble County89.6
18Major County89.5
19Pontotoc County89.4
20Osage County89.3
21McClain County89.3
22Harper County89.2
23Kingfisher County89.2
24Nowata County89.1
25Lincoln County89
26Pawnee County88.8
27Pottawatomie County88.7
28Oklahoma County88.4
29Kay County88.3
30Custer County88.2
31Cherokee County88.2
32Garfield County88.2
33Garvin County88.2
34Mayes County88.1
35Woodward County87.9
36Stephens County87.9
37Ellis County87.8
38Carter County87.2
39Johnston County87.2
40Bryan County87.1
41Pittsburg County87
42Craig County86.9
43Okmulgee County86.6
44Latimer County86.4
45Jackson County86.4
46McIntosh County86.3
46Ottawa County86.3
48Muskogee County86.3
49Cimarron County86.2
50Kiowa County86
51Caddo County85.7
52Murray County85.7
53Alfalfa County85.6
54Pushmataha County85.5
55Beckham County85.2
56Delaware County85.2
57Beaver County84.9
57Coal County84.9
59Haskell County84.7
60Love County84.3
61Le Flore County84.2
62McCurtain County84.1
63Seminole County84
64Atoka County83.7
65Choctaw County83.7
66Cotton County83.6
67Jefferson County83.5
68Hughes County83.3
69Blaine County83
70Greer County82.9
71Sequoyah County82.5
72Okfuskee County81.8
73Harmon County81.7
74Marshall County81.3
75Adair County81
76Tillman County79
77Texas County73.2

Other periods

About this ranking

People aged 25 and over who hold a regular high school diploma, a GED or alternative credential, or any higher level of education, as a percentage of all people aged 25 and over. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Measures the adult population, not students: it is not the high school graduation rate of a class. Not comparable with the EU share below upper secondary education, which covers ages 25 to 64.

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. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. 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). American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs (Counties in Oklahoma by high school graduate or higher, population 25 and over, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat

MLA 9

American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Oklahoma by high school graduate or higher, population 25 and over, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/oklahoma-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. Counties in Oklahoma by high school graduate or higher, population 25 and over, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/oklahoma-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Oklahoma by high school graduate or higher, population 25 and over, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat, via Invokely: https://invokely.ai/rankings/high-school-graduate-or-higher/oklahoma-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_oklahoma_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Oklahoma by high school graduate or higher, population 25 and over, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/oklahoma-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Oklahoma by high school graduate or higher, population 25 and over, 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat
L2  - https://invokely.ai/rankings/high-school-graduate-or-higher/oklahoma-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/oklahoma-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest high school graduate or higher, population 25 and over?

Dewey County, with 92.6% in 2021, according to the U.S. Census Bureau.

Which county has the lowest high school graduate or higher, population 25 and over?

Texas County, with 73.2% 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, American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. Retrieved 2026-10-12.

High school graduate or higher, population 25 and over: other rankings

Counties in Oklahoma: more rankings