Ranking of Oklahoma Counties By Percentage of Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Oklahoma (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 30.82%. Among all Oklahoma counties, Adair County had the highest percentage of its population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (46.83%), followed by Pushmataha County (44.23%), and Garvin County (44.17%).
The chart below shows the top 10 Oklahoma counties, and the table below shows the ranking of all Oklahoma counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: Oklahoma ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Oklahoma Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Adair County | 46.83 |
| 2 | Pushmataha County | 44.23 |
| 3 | Garvin County | 44.17 |
| 4 | McIntosh County | 43.73 |
| 5 | Caddo County | 43.27 |
| 6 | McCurtain County | 43.14 |
| 7 | Dewey County | 42.72 |
| 8 | Coal County | 42.68 |
| 9 | Stephens County | 42.45 |
| 10 | Pawnee County | 42.20 |
| 11 | Jefferson County | 42.12 |
| 12 | Lincoln County | 41.86 |
| 13 | Atoka County | 41.67 |
| 14 | Murray County | 41.55 |
| 15 | Kingfisher County | 41.34 |
| 16 | Cotton County | 41.28 |
| 17 | Major County | 41.27 |
| 18 | Washita County | 41.23 |
| 19 | Nowata County | 41.07 |
| 20 | Craig County | 40.93 |
| 21 | Mayes County | 40.49 |
| 22 | Woodward County | 40.48 |
| 23 | Hughes County | 40.40 |
| 24 | Le Flore County | 40.15 |
| 25 | Creek County | 40.11 |
| 26 | Haskell County | 39.94 |
| 27 | Okfuskee County | 39.77 |
| 28 | Grady County | 39.43 |
| 29 | Sequoyah County | 39.41 |
| 30 | Beckham County | 38.93 |
| 31 | Choctaw County | 38.83 |
| 32 | Love County | 38.66 |
| 33 | Latimer County | 37.51 |
| 34 | Ellis County | 37.38 |
| 35 | Pittsburg County | 37.37 |
| 36 | Delaware County | 37.29 |
| 37 | Cimarron County | 37.14 |
| 38 | Marshall County | 37.03 |
| 39 | Garfield County | 36.98 |
| 40 | Greer County | 36.84 |
| 41 | Osage County | 36.65 |
| 42 | Carter County | 36.37 |
| 43 | Johnston County | 35.91 |
| 44 | Noble County | 35.74 |
| 45 | Grant County | 35.73 |
| 46 | Seminole County | 35.31 |
| 47 | Ottawa County | 35.21 |
| 48 | Blaine County | 35.18 |
| 49 | Alfalfa County | 35.10 |
| 50 | Roger Mills County | 34.88 |
| 51 | Okmulgee County | 34.87 |
| 52 | Muskogee County | 34.80 |
| 53 | Pottawatomie County | 34.69 |
| 54 | Tillman County | 33.68 |
| 55 | Kay County | 33.67 |
| 56 | Washington County | 33.14 |
| 57 | Harmon County | 33.07 |
| 58 | Kiowa County | 33.05 |
| 59 | Rogers County | 32.92 |
| 60 | Cherokee County | 32.45 |
| 61 | Bryan County | 32.41 |
| 62 | Beaver County | 32.37 |
| 63 | Pontotoc County | 32.11 |
| 64 | Comanche County | 32.04 |
| 65 | McClain County | 31.43 |
| 66 | Harper County | 31.32 |
| 67 | Logan County | 31.10 |
| 68 | Wagoner County | 30.97 |
| 69 | Woods County | 30.69 |
| 70 | Payne County | 27.30 |
| 71 | Jackson County | 27.26 |
| 72 | Custer County | 27.15 |
| 73 | Canadian County | 26.96 |
| 74 | Tulsa County | 25.35 |
| 75 | Cleveland County | 25.13 |
| 76 | Oklahoma County | 24.64 |
| 77 | Texas County | 23.31 |
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