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Population and Demography of Oklahoma
Oklahoma is a state in the South Central region of the United States. It’s bordered by the state of Texas on the south and west, Kansas on the north, Missouri on the northeast, Arkansas on the east, New Mexico on the west, and Colorado on the northwest.
Oklahoma is the 28th most populous state in the United States. The total Land area is 68,595 sq. mi. (177,660 sq. km.) and there is an average of 55 people for every square mile. This makes Oklahoma the 35th most densely populated state in the US. As per the United States Census Bureau, the population of Oklahoma in 2020 was 3,959,353 (3.9 million)
Estimated Population of Oklahoma in 2023– 4,053,824 or 4 million
Oklahoma Population (2010-2020)
Oklahoma has a population growth rate of 5.5% during 2010-2020. It has population increase of 208,002 since 2010. The median age of the population residing in Oklahoma is approximately 36.3 years of age. The ratio of females to males is currently around 50.5% females and 49.5% males across the population.
| Oklahoma | Census 2020 |
| Total Population | 3,959,353 (3.9 million) |
| Percentage Change | 5.5% |
| Population Rank | 28th |
| Total Land Area | 68,595 sq mi (177,660 km2) |
| Area Rank | 20th |
| Population Density | 55.20/sq mi (21.30/km2) |
| Capital City | Oklahoma City |
| Largest City | Oklahoma City |
Oklahoma Historical Population
Oklahoma has a population growth rate of 5.5% during 2010-2020. In the year 1910 Population of Oklahoma was 0.8 million and in 2020 it reached 4 million, an increase of almost 2.7 million.
Let’s look at decade population & percentage change
| Year | Pop. | % Change |
| 1890 | 258,657 | – |
| 1900 | 790,391 | 205.60% |
| 1910 | 1,657,155 | 109.70% |
| 1920 | 2,028,283 | 22.40% |
| 1930 | 2,396,040 | 18.10% |
| 1940 | 2,336,433 | −2.5% |
| 1950 | 2,233,513 | −4.4% |
| 1960 | 2,328,284 | 4.20% |
| 1970 | 2,559,229 | 9.90% |
| 1980 | 3,025,290 | 18.20% |
| 1990 | 3,145,585 | 4.00% |
| 2000 | 3,450,654 | 9.70% |
| 2010 | 3,751,675 | 8.70% |
| 2020 | 3,959,353 | 5.50% |
Religion and Affiliations
Christianity is the majority religion in Oklahoma followed by 79% of the population. The largest Christian denomination in Oklahoma is Protestant (69%); Roman Catholic (8%); Mormonism (1%).
Next comes the Unaffiliated population, 18% of the population doesn’t follow or adhere to any faith or religion. Other non-Christian-based religions and faiths are followed by 2% of the population.
For more details read Religion in Oklahoma
Race and Ethnicity
In 2020, the White alone (non-Hispanic) population was the largest racial or ethnic group in Oklahoma, comprising 60.80% of the total population. It was followed by the Hispanic or Latino population whose share was 11.92%. Two or more races were the third-largest at 9.44%. American Indian population also has a good percentage in Oklahoma with a share of 7.88%. African Americans wat at 7.15% & Asians at 2.26%
Ancestry in Oklahoma
As per Census Studies & estimate German, Irish, American, English, and Italian have made the five largest ancestry groups in Oklahoma.
For more Details read Race and Ethnicity in Oklahoma
Top cities and Counties
As of 2022, Oklahoma is divided into 77 counties. The two most populated counties in Oklahoma, are Oklahoma county with 787,958 individuals, and Tulsa county with 646,266 residents. The Largest county by Land Area in Oklahoma is Osage County (2251 sq. mi.)
Oklahoma City with a population of 0.67 million is the most populated city in State. Its followed by Tulsa (403,166) and Norman (125,762).
read more about Cities and Counties in Oklahoma
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