Ranking of Oklahoma Counties By Population in 2018
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2018, the Population for Oklahoma was 3.94M. Among all Oklahoma counties, Oklahoma County had the highest population (790.93K), followed by Tulsa County (648.50K), and Cleveland County (281.56K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Oklahoma counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Oklahoma Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2018 Census.
See this for other years:
Ranking of Oklahoma Counties By Population in 2018
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| Rank | County | Population |
|---|---|---|
| 1 | Oklahoma County | 790926 |
| 2 | Tulsa County | 648496 |
| 3 | Cleveland County | 281559 |
| 4 | Canadian County | 144570 |
| 5 | Comanche County | 121001 |
| 6 | Rogers County | 91957 |
| 7 | Payne County | 82198 |
| 8 | Wagoner County | 80218 |
| 9 | Pottawatomie County | 72568 |
| 10 | Creek County | 71693 |
| 11 | Muskogee County | 68431 |
| 12 | Garfield County | 61270 |
| 13 | Grady County | 55411 |
| 14 | Washington County | 51881 |
| 15 | Le Flore County | 50080 |
| 16 | Cherokee County | 48692 |
| 17 | Carter County | 48345 |
| 18 | Logan County | 47304 |
| 19 | Bryan County | 47290 |
| 20 | Osage County | 47074 |
| 21 | Kay County | 44047 |
| 22 | Pittsburg County | 43842 |
| 23 | Stephens County | 43231 |
| 24 | Delaware County | 42897 |
| 25 | Sequoyah County | 41651 |
| 26 | Mayes County | 41173 |
| 27 | McClain County | 39855 |
| 28 | Pontotoc County | 38328 |
| 29 | Okmulgee County | 38223 |
| 30 | Lincoln County | 34824 |
| 31 | McCurtain County | 32921 |
| 32 | Ottawa County | 31332 |
| 33 | Caddo County | 29166 |
| 34 | Custer County | 28930 |
| 35 | Garvin County | 27747 |
| 36 | Jackson County | 24695 |
| 37 | Seminole County | 24529 |
| 38 | Adair County | 22251 |
| 39 | Beckham County | 21738 |
| 40 | Texas County | 20659 |
| 41 | Woodward County | 20277 |
| 42 | McIntosh County | 19702 |
| 43 | Marshall County | 16746 |
| 44 | Pawnee County | 16372 |
| 45 | Kingfisher County | 15916 |
| 46 | Choctaw County | 14666 |
| 47 | Craig County | 14273 |
| 48 | Murray County | 13977 |
| 49 | Atoka County | 13771 |
| 50 | Hughes County | 13277 |
| 51 | Haskell County | 12675 |
| 52 | Okfuskee County | 12046 |
| 53 | Noble County | 11304 |
| 54 | Pushmataha County | 11139 |
| 55 | Washita County | 11064 |
| 56 | Johnston County | 11003 |
| 57 | Nowata County | 10289 |
| 58 | Latimer County | 10155 |
| 59 | Love County | 10109 |
| 60 | Blaine County | 9490 |
| 61 | Woods County | 8872 |
| 62 | Kiowa County | 8728 |
| 63 | Major County | 7609 |
| 64 | Tillman County | 7325 |
| 65 | Jefferson County | 6088 |
| 66 | Cotton County | 5798 |
| 67 | Greer County | 5797 |
| 68 | Alfalfa County | 5742 |
| 69 | Coal County | 5519 |
| 70 | Beaver County | 5313 |
| 71 | Dewey County | 4930 |
| 72 | Grant County | 4315 |
| 73 | Ellis County | 3942 |
| 74 | Harper County | 3746 |
| 75 | Roger Mills County | 3657 |
| 76 | Harmon County | 2688 |
| 77 | Cimarron County | 2165 |