Oklahoma Population By County in 2021 (ACS-5Yrs)

Updated on February 28, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the total population of Oklahoma was 3.95M. Among all Oklahoma counties, Oklahoma was the most populated county (790.94K), followed by Tulsa (664.08K), and then Cleveland (292.11K).

On the other hand, the least populated counties were: Cimarron (2.27K), Harmon (2.54K), and Harper (3.36K).

The chart and table below shows the population of each county and the percentage of Oklahoma population in each county.

You can see similar information for other states and by state for the United States.

Related Topics: Oklahoma ACS-5Yrs Estimates, 2021 Topic List.

Data Source: US Census - ACS 5-Year Estimates, 2021 Census.

Oklahoma Population By County in 2021

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County	Population	% of State Population
Adair	19839	0.50
Alfalfa	5744	0.14
Atoka	14080	0.36
Beaver	5100	0.13
Beckham	22349	0.57
Blaine	8799	0.22
Bryan	45809	1.16
Caddo	27253	0.69
Canadian	151174	3.83
Carter	48102	1.22
Cherokee	47307	1.20
Choctaw	14307	0.36
Cimarron	2271	0.06
Cleveland	292110	7.40
Coal	5294	0.13
Comanche	121502	3.08
Cotton	5603	0.14
Craig	14172	0.36
Creek	71879	1.82
Custer	28564	0.72
Delaware	40688	1.03
Dewey	4548	0.12
Ellis	3813	0.10
Garfield	62628	1.59
Garvin	25949	0.66
Grady	54739	1.39
Grant	4166	0.11
Greer	5548	0.14
Harmon	2540	0.06
Harper	3358	0.09
Haskell	11711	0.30
Hughes	13406	0.34
Jackson	24960	0.63
Jefferson	5491	0.14
Johnston	10446	0.27
Kay	44019	1.12
Kingfisher	15272	0.39
Kiowa	8518	0.22
Latimer	9555	0.24
Le Flore	48436	1.23
Lincoln	33650	0.85
Logan	49005	1.24
Love	10105	0.26
McClain	41258	1.05
McCurtain	31112	0.79
McIntosh	19105	0.48
Major	7753	0.20
Marshall	15361	0.39
Mayes	39303	1.00
Murray	13874	0.35
Muskogee	66881	1.69
Noble	11020	0.28
Nowata	9484	0.24
Okfuskee	11444	0.29
Oklahoma	790938	20.03
Okmulgee	37046	0.94
Osage	46140	1.17
Ottawa	30568	0.77
Pawnee	15687	0.40
Payne	81817	2.07
Pittsburg	43836	1.11
Pontotoc	38102	0.97
Pottawatomie	72331	1.83
Pushmataha	10891	0.28
Roger Mills	3477	0.09
Rogers	94637	2.40
Seminole	23798	0.60
Sequoyah	39652	1.00
Stephens	42983	1.09
Texas	21448	0.54
Tillman	7070	0.18
Tulsa	664084	16.82
Wagoner	80509	2.04
Washington	52382	1.33
Washita	11014	0.28
Woods	8731	0.22
Woodward	20591	0.52