The chart below provides an estimate of the total number of billboard faces per 1,000 highway miles by state in order of greatest to smallest (2021). These counts only include state DOT-permitted billboards. They do not include locally permitted billboards, nor do they include digital billboards or billboards of an unknown/other type.
| Rank | State | State DOT-permitted Billboard Faces per Highway Lane Mile |
| 1 | Delaware | 379 |
| 2 | Wyoming | 231 |
| 3 | West Virginia | 154 |
| 4 | New Jersey | 148 |
| 5 | Florida | 117 |
| 6 | Maryland | 99 |
| 7 | Louisiana | 93 |
| 8 | Michigan | 90 |
| 9 | Tennessee | 83 |
| 10 | Ohio | 74 |
| 11 | Pennsylvania | 74 |
| 12 | Indiana | 66 |
| 13 | New Mexico | 66 |
| 14 | Missouri | 63 |
| 15 | Alabama | 63 |
| 16 | North Carolina | 60 |
| 17 | Oklahoma | 59 |
| 18 | Illinois | 51 |
| 19 | South Carolina | 50 |
| 20 | Virginia | 50 |
| 21 | South Dakota | 48 |
| 22 | Connecticut | 45 |
| 23 | Georgia | 45 |
| 24 | Utah | 43 |
| 25 | Wisconsin | 42 |
| 26 | New York | 40 |
| 27 | California | 37 |
| 28 | Massachusetts | 37 |
| 29 | Texas | 36 |
| 30 | Arkansas | 35 |
| 31 | Rhode Island | 31 |
| 32 | Montana | 30 |
| 33 | Kansas | 29 |
| 34 | Mississippi | 28 |
| 35 | New Hampshire | 27 |
| 36 | Arizona | 25 |
| 37 | Minnesota | 25 |
| 38 | Kentucky | 24 |
| 39 | Nevada | 22 |
| 40 | Iowa | 21 |
| 41 | Nebraska | 20 |
| 42 | Oregon | 18 |
| 43 | North Dakota | 15 |
| 44 | Colorado | 13 |
| 45 | Washington | 13 |
| 46 | Idaho | 9 |
| 47 | Washington, DC | 6 |
| – | Alaska | 0 |
| – | Hawaii | 0 |
| – | Maine | 0 |
| – | Vermont | 0 |