US Population By State in 2021 (ACS-5Yrs)
Updated on July 2, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, the total population of the US was 329.73M. Among all US states and DC, California was the most populated state (39.46M), followed by Texas (28.86M), and then Florida (21.34M).
On the other hand, the least populated states were: Wyoming (576.64K), Vermont (641.64K), and District of Columbia (683.15K),
The chart and table below shows the population of each state and the percentage of the US population in each state.
Related Topics: US ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
US Population By State in 2021
less than 1M
1M - 2M
2M - 5M
5M - 10M
10M - 15M
Over 15M
US Population By State in 2021
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| State | Population | % of US Population |
|---|---|---|
| Alabama | 4997675 | 1.52 |
| Alaska | 735951 | 0.22 |
| Arizona | 7079203 | 2.15 |
| Arkansas | 3006309 | 0.91 |
| California | 39455353 | 11.97 |
| Colorado | 5723176 | 1.74 |
| Connecticut | 3605330 | 1.09 |
| Delaware | 981892 | 0.30 |
| Florida | 21339762 | 6.47 |
| Georgia | 10625615 | 3.22 |
| Hawaii | 1453498 | 0.44 |
| Idaho | 1811617 | 0.55 |
| Illinois | 12821813 | 3.89 |
| Indiana | 6751340 | 2.05 |
| Iowa | 3179090 | 0.96 |
| Kansas | 2932099 | 0.89 |
| Kentucky | 4494141 | 1.36 |
| Louisiana | 4657305 | 1.41 |
| Maine | 1357046 | 0.41 |
| Maryland | 6148545 | 1.87 |
| Massachusetts | 6991852 | 2.12 |
| Michigan | 10062512 | 3.05 |
| Minnesota | 5670472 | 1.72 |
| Mississippi | 2967023 | 0.90 |
| Missouri | 6141534 | 1.86 |
| Montana | 1077978 | 0.33 |
| Nebraska | 1951480 | 0.59 |
| Nevada | 3059238 | 0.93 |
| New Hampshire | 1372175 | 0.42 |
| New Jersey | 9234024 | 2.80 |
| New Mexico | 2109366 | 0.64 |
| New York | 20114745 | 6.10 |
| North Carolina | 10367022 | 3.14 |
| North Dakota | 773344 | 0.24 |
| Ohio | 11769923 | 3.57 |
| Oklahoma | 3948136 | 1.20 |
| Oregon | 4207177 | 1.28 |
| Pennsylvania | 12970650 | 3.93 |
| Rhode Island | 1091949 | 0.33 |
| South Carolina | 5078903 | 1.54 |
| South Dakota | 881785 | 0.27 |
| Tennessee | 6859497 | 2.08 |
| Texas | 28862581 | 8.75 |
| Utah | 3231370 | 0.98 |
| Vermont | 641637 | 0.20 |
| Virginia | 8582479 | 2.60 |
| Washington | 7617364 | 2.31 |
| West Virginia | 1801049 | 0.55 |
| Wisconsin | 5871661 | 1.78 |
| Wyoming | 576641 | 0.18 |
| District of Columbia | 683154 | 0.21 |