| State | Year of Admission |
| Delaware | 1787 |
| Pennsylvania | 1787 |
| New Jersey | 1787 |
| Georgia | 1788 |
| Connecticut | 1788 |
| Massachusetts | 1788 |
| Maryland | 1788 |
| South Carolina | 1788 |
| New Hampshire | 1788 |
| Virginia | 1788 |
| New York | 1788 |
| North Carolina | 1789 |
| Rhode Island | 1790 |
| Vermont | 1791 |
| Kentucky | 1792 |
| Tennessee | 1796 |
| Ohio | 1803 |
| Louisiana | 1812 |
| Indiana | 1816 |
| Mississippi | 1817 |
| Illinois | 1818 |
| Alabama | 1819 |
| Maine | 1820 |
| Missouri | 1821 |
| Arkansas | 1836 |
| Michigan | 1837 |
| Florida | 1845 |
| Texas | 1845 |
| Iowa | 1846 |
| Wisconsin | 1848 |
| California | 1850 |
| Minnesota | 1858 |
| Oregon | 1859 |
| Kansas | 1861 |
| West Virginia | 1863 |
| Nevada | 1864 |
| Nebraska | 1867 |
| Colorado | 1876 |
| North Dakota | 1889 |
| South Dakota | 1889 |
| Montana | 1889 |
| Washington | 1889 |
| Idaho | 1890 |
| Wyoming | 1890 |
| Utah | 1896 |
| Oklahoma | 1907 |
| New Mexico | 1912 |
| Arizona | 1912 |
| Alaska | 1959 |
| Hawaii | 1959 |