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Oklahoma population by year, 1990 to 2025

Oklahoma passed 4 million in 2022 and reached 4.12 million in 2025, up 31 percent since 1990, while ranking 28th among the states.

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What the data shows

  • Oklahoma: 3.15M in 1990, 4.12M in 2025.

About this chart

Oklahoma grew from 3,147,105 in 1990 to 4,123,288 in 2025, a gain of about 976,000 people or 31 percent. It crossed 4 million in 2022, and its growth has picked up recently, with about 158,000 added between 2020 and 2025, a 4.0 percent gain. Every year in the series sets a new high.

Longer-run growth is moderate: 19.4 percent since 2000 and 9.7 percent since 2010. In the rankings Oklahoma has hardly moved. It was 28th among the 50 states in 1990, 27th in 2000, then 28th in both 2010 and 2025. The figures are Census Bureau resident estimates for July 1 of each year.

The data

Source: U.S. Census Bureau population estimates, July 1 (vintages 1999, 2000–2010 intercensal, 2020 and 2025), resident population of Oklahoma, millions. Retrieved November 4, 2026.

Population of Oklahoma, Residents, 1990 to 2025, 1990–2025
DateOklahoma
19903.15M
19913.17M
19923.20M
19933.23M
19943.25M
19953.27M
19963.29M
19973.31M
19983.34M
19993.36M
20003.45M
20013.47M
20023.49M
20033.51M
20043.53M
20053.55M
20063.59M
20073.63M
20083.67M
20093.72M
20103.76M
20113.79M
20123.82M
20133.85M
20143.88M
20153.91M
20163.93M
20173.93M
20183.94M
20193.96M
20203.97M
20213.99M
20224.03M
20234.06M
20244.10M
20254.12M

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Frequently asked questions

What is the population of Oklahoma?

Oklahoma had about 4.12 million residents (4,123,288) in July 2025, according to Census Bureau estimates. That ranks 28th among the 50 states.

When did Oklahoma pass 4 million people?

Oklahoma's estimate was 3.99 million in 2021 and 4.03 million in 2022, so it passed 4 million in 2022.

How fast is Oklahoma growing?

Oklahoma is up 9.7 percent since 2010 and 4.0 percent since 2020. Since 1990 the population has grown about 31 percent.

Where does this data come from?

U.S. Census Bureau population estimates, July 1 (vintages 1999, 2000–2010 intercensal, 2020 and 2025), resident population of Oklahoma, millions. Retrieved November 4, 2026. You can download the full table as a CSV from this page.

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