Oklahoma Population By County in 2021

Based on the US Census Vintage data estimates, in 2021, the population of Oklahoma was 3,991,225. Among all Oklahoma counties, Oklahoma[object Promise] had the highest population (799,622), followed by Tulsa[object Promise] (673,961), and Cleveland[object Promise] (298,099). Cimarron[object Promise] was the least populated county (2,255).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

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