Oklahoma Population By County in 2018

Based on the US Census Vintage data estimates, in 2018, the population of Oklahoma was 3,943,488. Among all Oklahoma counties, Oklahoma[object Promise] had the highest population (790,926), followed by Tulsa[object Promise] (648,496), and Cleveland[object Promise] (281,559). Cimarron[object Promise] was the least populated county (2,165).

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.