Share of the population by age and sex, five-year groups

Population of Oklahoma, 2010–2025 · click to pick a year
Estimates up to 2019 are built on the 2010 Census, those from 2020 on the 2020 Census. A line that steps up or down between 2019 and 2020 reflects this re-basing, not a sudden change in population.

Year

-5 -1   2025  +1 +5

4,123,288 people lived in Oklahoma on July 1, 2025: the 28th-largest population among the 50 states and the District of Columbia. The median age was 37.7 years (United States: 39.4); children (19.0%) and older adults (18.0%) make up similar shares of the population. There were 98.0 men for every 100 women. Since 2010 the population has grown by 9.7%. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 estimates (resident population on July 1; public domain). Median age, shares, dependency ratios and rankings are calculated by PopulationPyramid.net from these estimates; the Census Bureau does not endorse this site.

Key indicators, 2025
Population
4,123,288
Rank by population
28th of 51
Median age
37.7
Men per 100 women
98.0
Under 15
19.0%
15–64
63.0%
65 and over
18.0%
Child dependency
30.2
Old-age dependency
28.5
Change since 2010
+9.7%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2025
AgeMenWomenTotalShare
0-4125,628119,901245,5296.0%
5-9135,169128,255263,4246.4%
10-14140,717134,093274,8106.7%
15-19148,954140,586289,5407.0%
20-24156,097143,735299,8327.3%
25-29139,471133,871273,3426.6%
30-34134,653132,337266,9906.5%
35-39135,727135,266270,9936.6%
40-44134,959135,495270,4546.6%
45-49120,010120,360240,3705.8%
50-54111,922114,455226,3775.5%
55-59107,434111,910219,3445.3%
60-64115,774125,424241,1985.8%
65-69109,689123,141232,8305.6%
70-7490,773104,256195,0294.7%
75-7965,66480,422146,0863.5%
80-8438,62651,37890,0042.2%
85+29,48747,64977,1361.9%
How Oklahoma compares with similar-sized states, 2025
RankStateResidentsRelative
25 Louisiana 4,618,189
26 Kentucky 4,606,864
27 Oregon 4,273,586
28 Oklahoma 4,123,288
29 Connecticut 3,688,496
30 Utah 3,538,904
31 Nevada 3,282,188
Frequently asked questions about Oklahoma's population
What is the population of Oklahoma?
Oklahoma had an estimated 4,123,288 residents on July 1, 2025, according to the U.S. Census Bureau, Population Estimates Program. That ranks 28th among the 51 states and the District of Columbia.
What is the median age in Oklahoma?
The median age in Oklahoma was 37.7 years in 2025, the 45th oldest of the 51 states and DC. That is 1.7 years younger than the national median of 39.4.
How many people in Oklahoma are 65 or older?
About 741,085 residents of Oklahoma (18.0%) were 65 or older in 2025, against 19.0% under 15 and 63.0% aged 15 to 64.
What does the population pyramid of Oklahoma show?
In 2025, Oklahoma: children (19.0%) and older adults (18.0%) make up similar shares of the population. There were 98.0 men for every 100 women.
How fast is the population of Oklahoma changing?
The population of Oklahoma grew by 9.7% between 2010 and 2025, and by 0.6% in the last year.
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