All counties in Oklahoma
| County Name | Population | State | Rank |
|---|
| Oklahoma County | 718,633 | Oklahoma | 1 |
| Tulsa County | 603,403 | Oklahoma | 2 |
| Cleveland County | 255,755 | Oklahoma | 3 |
| Comanche County | 124,098 | Oklahoma | 4 |
| Canadian County | 115,541 | Oklahoma | 5 |
| Rogers County | 86,905 | Oklahoma | 6 |
| Payne County | 77,350 | Oklahoma | 7 |
| Wagoner County | 73,085 | Oklahoma | 8 |
| Muskogee County | 70,990 | Oklahoma | 9 |
| Creek County | 69,967 | Oklahoma | 10 |
| Pottawatomie County | 69,442 | Oklahoma | 11 |
| Garfield County | 60,580 | Oklahoma | 12 |
| Grady County | 52,431 | Oklahoma | 13 |
| Washington County | 50,976 | Oklahoma | 14 |
| Le Flore County | 50,384 | Oklahoma | 15 |
| Carter County | 47,557 | Oklahoma | 16 |
| Osage County | 47,472 | Oklahoma | 17 |
| Cherokee County | 46,987 | Oklahoma | 18 |
| Kay County | 46,562 | Oklahoma | 19 |
| Pittsburg County | 45,837 | Oklahoma | 20 |
| Stephens County | 45,048 | Oklahoma | 21 |
| Bryan County | 42,416 | Oklahoma | 22 |
| Sequoyah County | 42,391 | Oklahoma | 23 |
| Logan County | 41,848 | Oklahoma | 24 |
| Delaware County | 41,487 | Oklahoma | 25 |
| Mayes County | 41,259 | Oklahoma | 26 |
| Okmulgee County | 40,069 | Oklahoma | 27 |
| Pontotoc County | 37,492 | Oklahoma | 28 |
| Mcclain County | 34,506 | Oklahoma | 29 |
| Lincoln County | 34,273 | Oklahoma | 30 |
| Mccurtain County | 33,151 | Oklahoma | 31 |
| Ottawa County | 31,848 | Oklahoma | 32 |
| Caddo County | 29,600 | Oklahoma | 33 |
| Garvin County | 27,576 | Oklahoma | 34 |
| Custer County | 27,469 | Oklahoma | 35 |
| Jackson County | 26,446 | Oklahoma | 36 |
| Seminole County | 25,482 | Oklahoma | 37 |
| Adair County | 22,683 | Oklahoma | 38 |
| Beckham County | 22,119 | Oklahoma | 39 |
| Texas County | 20,640 | Oklahoma | 40 |
| Mcintosh County | 20,252 | Oklahoma | 41 |
| Woodward County | 20,081 | Oklahoma | 42 |
| Pawnee County | 16,577 | Oklahoma | 43 |
| Marshall County | 15,840 | Oklahoma | 44 |
| Choctaw County | 15,205 | Oklahoma | 45 |
| Kingfisher County | 15,034 | Oklahoma | 46 |
| Craig County | 15,029 | Oklahoma | 47 |
| Atoka County | 14,182 | Oklahoma | 48 |
| Hughes County | 14,003 | Oklahoma | 49 |
| Murray County | 13,488 | Oklahoma | 50 |
| Haskell County | 12,769 | Oklahoma | 51 |
| Okfuskee County | 12,191 | Oklahoma | 52 |
| Blaine County | 11,943 | Oklahoma | 53 |
| Washita County | 11,629 | Oklahoma | 54 |
| Pushmataha County | 11,572 | Oklahoma | 55 |
| Noble County | 11,561 | Oklahoma | 56 |
| Latimer County | 11,154 | Oklahoma | 57 |
| Johnston County | 10,957 | Oklahoma | 58 |
| Nowata County | 10,536 | Oklahoma | 59 |
| Kiowa County | 9,446 | Oklahoma | 60 |
| Love County | 9,423 | Oklahoma | 61 |
| Woods County | 8,878 | Oklahoma | 62 |
| Tillman County | 7,992 | Oklahoma | 63 |
| Major County | 7,527 | Oklahoma | 64 |
| Jefferson County | 6,472 | Oklahoma | 65 |
| Greer County | 6,239 | Oklahoma | 66 |
| Cotton County | 6,193 | Oklahoma | 67 |
| Coal County | 5,925 | Oklahoma | 68 |
| Alfalfa County | 5,642 | Oklahoma | 69 |
| Beaver County | 5,636 | Oklahoma | 70 |
| Dewey County | 4,810 | Oklahoma | 71 |
| Grant County | 4,527 | Oklahoma | 72 |
| Ellis County | 4,151 | Oklahoma | 73 |
| Harper County | 3,685 | Oklahoma | 74 |
| Roger Mills County | 3,647 | Oklahoma | 75 |
| Harmon County | 2,922 | Oklahoma | 76 |
| Cimarron County | 2,475 | Oklahoma | 77 |