Oklahoma Population By County (2018)
Created on February 26, 2020.
Data Updated on April 4, 2021.

According to the US Census Bureau population estimates, there were 3,940,235 people living in Oklahoma in 2018. Oklahoma County was the most populated county with 790,593 residents, followed by Tulsa County with 647,683 residents, and Cleveland County with 281,166 residents. Cimarron County with a population of 2,165 was the least populated county in Oklahoma in 2018.

Use the map below to interactively explore the population of each county in Oklahoma in 2018. The data can also be explored further by sorting and filtering with the table below.

Hover/Click on the counties to see the values.
Oklahoma Population By County (2018)
Table of Oklahoma Population By County (2018)
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County Population % of State Population
Adair 22,224 0.56%
Alfalfa 5,765 0.15%
Atoka 13,795 0.35%
Beaver 5,318 0.14%
Beckham 21,720 0.55%
Blaine 9,454 0.24%
Bryan 47,191 1.20%
Caddo 29,028 0.74%
Canadian 144,426 3.67%
Carter 48,213 1.22%
Cherokee 48,607 1.23%
Choctaw 14,698 0.37%
Cimarron 2,165 0.06%
Cleveland 281,166 7.14%
Coal 5,520 0.14%
Comanche 120,528 3.06%
Cotton 5,820 0.15%
Craig 14,300 0.36%
Creek 71,730 1.82%
Custer 28,995 0.74%
Delaware 42,814 1.09%
Dewey 4,931 0.13%
Ellis 3,939 0.10%
Garfield 61,095 1.55%
Garvin 27,746 0.70%
Grady 55,448 1.41%
Grant 4,321 0.11%
Greer 5,814 0.15%
Harmon 2,691 0.07%
Harper 3,727 0.10%
Haskell 12,636 0.32%
Hughes 13,305 0.34%
Jackson 24,775 0.63%
Jefferson 6,106 0.16%
Johnston 11,020 0.28%
Kay 43,944 1.12%
Kingfisher 15,814 0.40%
Kiowa 8,732 0.22%
Latimer 10,175 0.26%
Le Flore 50,093 1.27%
Lincoln 34,837 0.88%
Logan 47,248 1.20%
Love 10,156 0.26%
McClain 39,887 1.01%
McCurtain 32,967 0.84%
McIntosh 19,745 0.50%
Major 7,627 0.19%
Marshall 16,727 0.43%
Mayes 41,210 1.05%
Murray 13,968 0.35%
Muskogee 68,324 1.73%
Noble 11,279 0.29%
Nowata 10,278 0.26%
Okfuskee 12,081 0.31%
Oklahoma 790,593 20.07%
Okmulgee 38,321 0.97%
Osage 47,121 1.20%
Ottawa 31,319 0.80%
Pawnee 16,356 0.42%
Payne 82,172 2.09%
Pittsburg 43,870 1.11%
Pontotoc 38,272 0.97%
Pottawatomie 72,513 1.84%
Pushmataha 11,192 0.28%
Roger Mills 3,646 0.09%
Rogers 91,801 2.33%
Seminole 24,520 0.62%
Sequoyah 41,585 1.06%
Stephens 43,179 1.10%
Texas 20,491 0.52%
Tillman 7,323 0.19%
Tulsa 647,683 16.44%
Wagoner 80,123 2.03%
Washington 51,791 1.31%
Washita 11,036 0.28%
Woods 8,893 0.23%
Woodward 20,312 0.52%