All 50 states, checked against official park-agency and state-library pages. 20 states run statewide borrow-a-pass programs, 8 have them at some libraries, and 10 don't charge day-use entry at all. Each state page says what the pass covers, how to borrow one, and what entry costs without it.
| State | Library pass? | Program |
|---|---|---|
| Alabama | None found | — |
| Alaska | None found | — |
| Arizona | None found | — |
| Arkansas | Not needed (free entry) | — |
| California | Yes — statewide | California State Library Parks Pass |
| Colorado | Yes — statewide | Check Out Colorado State Parks |
| Connecticut | Some libraries | No Child Left Inside Library Pass |
| Delaware | Yes — statewide | Delaware State Parks Pass (via Delaware Libraries) |
| Florida | Yes — statewide | The Real Florida Reader |
| Georgia | Yes — statewide | Library Loan Program (ParkPass) |
| Hawaii | None found | — |
| Idaho | Some libraries | Youth Explorer Passes (ICfL/IDPR); individual-library "Park Pass Packs" |
| Illinois | Not needed (free entry) | — |
| Indiana | Some libraries | Indiana State Library / DNR library park-pass offerings |
| Iowa | None found | — |
| Kansas | Yes — statewide | Kansas State Parks Library Program |
| Kentucky | Not needed (free entry) | — |
| Louisiana | Yes — statewide | Check Out Louisiana |
| Maine | Some libraries | Maine State Park Pass library checkout (originated as a Friends of Maine State Parks pilot) |
| Maryland | Some libraries | Maryland State Park Pass (Anne Arundel County Public Library, in partnership with MD DNR) |
| Massachusetts | Yes — statewide | DCR ParksPass |
| Michigan | Some libraries | Michigan Activity Pass (MAP) |
| Minnesota | Yes — statewide | Minnesota State Parks Library Program |
| Mississippi | None found | — |
| Missouri | Not needed (free entry) | — |
| Montana | None found | — |
| Nebraska | None found | — |
| Nevada | Yes — statewide | Nevada State Parks Library Park Pass |
| New Hampshire | Some libraries | NH State Parks library pass |
| New Jersey | None found | — |
| New Mexico | None found | — |
| New York | Yes — statewide | Empire Pass (library lending) |
| North Carolina | Not needed (free entry) | — |
| North Dakota | Yes — statewide | State Park Passes (ND State Library / ND Parks & Recreation Dept.) |
| Ohio | Not needed (free entry) | — |
| Oklahoma | None found | — |
| Oregon | Yes — statewide | Borrow a Day-use Parking Permit (Oregon Parks and Recreation Dept. / State Library of Oregon) |
| Pennsylvania | Not needed (free entry) | — |
| Rhode Island | Not needed (free entry) | — |
| South Carolina | Yes — statewide | Check Out SC |
| South Dakota | Yes — statewide | Check Out South Dakota State Parks |
| Tennessee | Not needed (free entry) | — |
| Texas | None found | — |
| Utah | Some libraries | Annual Park Pass Library Program (also called 'Check it Out') |
| Vermont | Yes — statewide | Vermont State Park and Historic Site Passes Program |
| Virginia | Yes — statewide | Nature Backpacks |
| Washington | Yes — statewide | Check Out Washington |
| West Virginia | Not needed (free entry) | — |
| Wisconsin | Yes — statewide | Check Out Wisconsin State Parks At Your Library |
| Wyoming | Yes — statewide | Wyoming State Parks Library Program |