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

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen population for Oklahoma was 3,801,925 and represented 96.30% of the total Oklahoma population.

Among all Oklahoma counties, Oklahoma had the highest citizen population (739.66K), followed by Tulsa (626.67K), and Cleveland (282.51K).

In terms of percentages, Grant had the highest percentage of its population being citizens (99.88%), followed by Pawnee (99.81%), and Cotton (99.73%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

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