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| State | Date of Admission |
| Delaware | December 7, 1787 |
| Pennsylvania | December 12, 1787 |
| New Jersey | December 18, 1787 |
| Georgia | January 2, 1788 |
| Connecticut | January 9, 1788 |
| Massachusetts | February 6, 1788 |
| Maryland | April 28, 1788 |
| South Carolina | May 23, 1788 |
| New Hampshire | June 21, 1788 |
| Virginia | June 25, 1788 |
| New York | July 26, 1788 |
| North Carolina | November 21, 1789 |
| Rhode Island | May 29, 1790 |
| Vermont | March 4, 1791 |
| Kentucky | June 1, 1792 |
| Tennessee | June 1, 1796 |
| Ohio | March 1, 1803 |
| Louisiana | April 30, 1812 |
| Indiana | December 11, 1816 |
| Mississippi | December 10, 1817 |
| Illinois | December 3, 1818 |
| Alabama | December 14, 1819 |
| Maine | March 15, 1820 |
| Missouri | August 10, 1821 |
| Arkansas | June 15, 1836 |
| Michigan | January 16, 1837 |
| Florida | March 3, 1845 |
| Texas | December 29, 1845 |
| Iowa | December 28, 1846 |
| Wisconsin | May 29, 1848 |
| California | September 9, 1850 |
| Minnesota | May 11, 1858 |
| Oregon | February 14, 1859 |
| Kansas | January 29, 1861 |
| West Virginia | June 19, 1863 |
| Nevada | October 31, 1864 |
| Nebraska | March 1, 1867 |
| Colorado | August 1, 1876 |
| North Dakota | November 2, 1889 |
| South Dakota | November 2, 1889 |
| Montana | November 8, 1889 |
| Washington | November 11, 1889 |
| Idaho | July 3, 1890 |
| Wyoming | July 10, 1890 |
| Utah | January 4, 1896 |
| Oklahoma | November 16, 1907 |
| New Mexico | January 6, 1912 |
| Arizona | February 14, 1912 |
| Alaska | January 3, 1959 |
| Hawai’i | August 21, 1959 |