| Counties with TAZs by State | |||
| State | Total Counties | Counties with TAZs | % |
| Alabama | 67 | 20 | 29.85% |
| Alaska | 25 | 1 | 4.00% |
| Arizona | 15 | 4 | 26.67% |
| Arkansas | 75 | 11 | 14.67% |
| California | 58 | 24 | 41.38% |
| Colorado | 63 | 14 | 22.22% |
| Connecticut | 8 | 8 | 100.00% |
| Delaware | 3 | 0 | 0.00% |
| District of Columbia | 1 | 1 | 100.00% |
| Florida | 67 | 31 | 46.27% |
| Georgia | 159 | 27 | 16.98% |
| Hawaii | 5 | 0 | 0.00% |
| Idaho | 44 | 3 | 6.82% |
| Illinois | 102 | 24 | 23.53% |
| Indiana | 92 | 89 | 96.74% |
| Iowa | 99 | 23 | 23.23% |
| Kansas | 105 | 9 | 8.57% |
| Kentucky | 120 | 120 | 100.00% |
| Louisiana | 64 | 17 | 26.56% |
| Maine | 16 | 16 | 100.00% |
| Maryland | 24 | 14 | 58.33% |
| Massachusetts | 14 | 4 | 28.57% |
| Michigan | 83 | 83 | 100.00% |
| Minnesota | 87 | 24 | 27.59% |
| Mississippi | 82 | 79 | 96.34% |
| Missouri | 115 | 17 | 14.78% |
| Montana | 57 | 0 | 0.00% |
| Nebraska | 93 | 93 | 100.00% |
| Nevada | 17 | 2 | 11.76% |
| New Hampshire | 10 | 10 | 100.00% |
| New Jersey | 21 | 8 | 38.10% |
| New Mexico | 33 | 5 | 15.15% |
| New York | 62 | 21 | 33.87% |
| North Carolina | 100 | 30 | 30.00% |
| North Dakota | 53 | 2 | 3.77% |
| Ohio | 88 | 30 | 34.09% |
| Oklahoma | 77 | 14 | 18.18% |
| Oregon | 36 | 1 | 2.78% |
| Pennsylvania | 67 | 25 | 37.31% |
| Rhode Island | 5 | 5 | 100.00% |
| South Carolina | 46 | 46 | 100.00% |
| South Dakota | 66 | 66 | 100.00% |
| Tennessee | 95 | 13 | 13.68% |
| Texas | 254 | 252 | 99.21% |
| Utah | 29 | 7 | 24.14% |
| Vermont | 14 | 1 | 7.14% |
| Virginia | 136 | 64 | 47.06% |
| Washington | 39 | 12 | 30.77% |
| West Virginia | 55 | 55 | 100.00% |
| Wisconsin | 72 | 27 | 37.50% |
| Wyoming | 23 | 1 | 4.35% |
| United States | 3141 | 1453 | 46.26% |