Washington, D.C. has the most physician assistants per 100,000 people in the country, while Mississippi has the least, according to KFF data published in February and 2024 U.S. Census data.
KFF sourced Redi-Data for professionally active state licensed physicians assistant data as of January 2024. In the United States, there are 126,634 active PAs.
States ranked by physician assistants per 100,000 people in 2024:
| State | 2024 population | Total PAs | PAs per capita | PA per 100K |
| District of Columbia | 677,827 | 713 | 0.0010519 | 105.2 |
| Connecticut | 3,625,646 | 2,633 | 0.0007262 | 72.6 |
| New Hampshire | 1,405,105 | 962 | 0.0006846 | 68.5 |
| South Dakota | 928,767 | 611 | 0.0006579 | 65.8 |
| Nebraska | 1,988,698 | 1,270 | 0.0006386 | 63.9 |
| Alaska | 733,536 | 459 | 0.0006257 | 62.6 |
| Michigan | 10,041,241 | 6,065 | 0.0006040 | 60.4 |
| Rhode Island | 1,098,082 | 655 | 0.0005965 | 59.6 |
| Massachusetts | 7,020,058 | 4,187 | 0.0005964 | 59.6 |
| North Carolina | 10,975,017 | 6,385 | 0.0005818 | 58.2 |
| Colorado | 5,914,181 | 3,423 | 0.0005788 | 57.9 |
| Minnesota | 5,761,530 | 3,066 | 0.0005322 | 53.2 |
| Maryland | 6,196,525 | 3,279 | 0.0005292 | 52.9 |
| Maine | 1,402,106 | 715 | 0.0005099 | 51.0 |
| Vermont | 647,818 | 330 | 0.0005094 | 50.9 |
| Oregon | 4,227,337 | 2,025 | 0.0004790 | 47.9 |
| Idaho | 1,990,456 | 899 | 0.0004517 | 45.2 |
| Pennsylvania | 12,951,275 | 5,631 | 0.0004348 | 43.5 |
| New York | 19,469,232 | 8,431 | 0.0004330 | 43.3 |
| Oklahoma | 4,088,377 | 1,706 | 0.0004173 | 41.7 |
| Florida | 22,975,931 | 9,371 | 0.0004079 | 40.8 |
| New Jersey | 9,320,865 | 3,773 | 0.0004048 | 40.5 |
| Virginia | 8,752,297 | 3,381 | 0.0003863 | 38.6 |
| Iowa | 3,214,315 | 1,215 | 0.0003780 | 37.8 |
| Arizona | 7,497,004 | 2,823 | 0.0003766 | 37.7 |
| Ohio | 11,812,173 | 4,251 | 0.0003599 | 36.0 |
| Texas | 30,976,754 | 10,661 | 0.0003442 | 34.4 |
| Tennessee | 7,204,002 | 2,401 | 0.0003333 | 33.3 |
| Illinois | 12,516,863 | 4,078 | 0.0003258 | 32.6 |
| New Mexico | 2,115,266 | 657 | 0.0003106 | 31.1 |
| Georgia | 11,145,304 | 3,426 | 0.0003074 | 30.7 |
| California | 38,889,770 | 11,846 | 0.0003046 | 30.5 |
| Kentucky | 4,540,745 | 1,380 | 0.0003039 | 30.4 |
| Wisconsin | 5,931,367 | 1,770 | 0.0002984 | 29.8 |
| West Virginia | 1,766,107 | 511 | 0.0002893 | 28.9 |
| Louisiana | 4,559,475 | 1,316 | 0.0002886 | 28.9 |
| Nevada | 3,210,931 | 897 | 0.0002794 | 27.9 |
| North Dakota | 788,940 | 216 | 0.0002738 | 27.4 |
| Delaware | 1,044,321 | 275 | 0.0002633 | 26.3 |
| Washington | 7,841,283 | 1,974 | 0.0002517 | 25.2 |
| Montana | 1,142,746 | 285 | 0.0002494 | 24.9 |
| Kansas | 2,944,376 | 719 | 0.0002442 | 24.4 |
| Indiana | 6,892,124 | 1,532 | 0.0002223 | 22.2 |
| Utah | 3,454,232 | 767 | 0.0002220 | 22.2 |
| Wyoming | 586,485 | 129 | 0.0002200 | 22.0 |
| Missouri | 6,215,144 | 1,217 | 0.0001958 | 19.6 |
| South Carolina | 5,464,155 | 888 | 0.0001625 | 16.3 |
| Arkansas | 3,089,060 | 468 | 0.0001515 | 15.2 |
| Alabama | 5,143,033 | 699 | 0.0001359 | 13.6 |
| Hawaii | 1,430,877 | 145 | 0.0001013 | 10.1 |
| Mississippi | 2,940,452 | 118 | 0.0000401 | 4.0 |