| State | Ratification or Admission | Preceding Entity | |
| July 4, 1776 | Lower Counties on Delaware | ||
| Delaware | December 7, 1787 | Sovereign state in Confederation | |
| July 4, 1776 | Province of Pennsylvania | ||
| Pennsylvania | December 12, 1787 | Sovereign state in Confederation | |
| July 4, 1776 | Province of New Jersey | ||
| New Jersey | December 7, 1787 | Sovereign state in Confederation | |
| July 4, 1776 | Province of Georgia | ||
| Georgia | January 2, 1788 | Sovereign state in Confederation | |
| July 4, 1776 | Connecticut Colony | ||
| Connecticut | January 9, 1788 | Sovereign state in Confederation | |
| July 4, 1776 | Province of Massachusetts Bay | ||
| Massachusetts | February 6, 1788 | Sovereign state in Confederation | |
| July 4, 1776 | Province of Maryland | ||
| Maryland | April 28, 1788 | Sovereign state in Confederation | |
| July 4, 1776 | Province of South Carolina | ||
| South Carolina | May 23, 1788 | Sovereign state in Confederation | |
| July 4, 1776 | Province of New Hampshire | ||
| New Hampshire | June 21, 1788 | Sovereign state in Confederation | |
| July 4, 1776 | Virginia Colony | ||
| Virginia | June 25, 1788 | Sovereign state in Confederation | |
| July 4, 1776 | Province of New York | ||
| New York | July 26, 1788 | Sovereign state in Confederation | |
| July 4, 1776 | Province of North Carolina, then sovereign state in Confederation | ||
| North Carolina | |||
| July 4, 1776 | Colony of Rhode Island and Providence Plantations, then sovereign state in Confederation | ||
| Rhode Island | |||
| Vermont | March 4, 1791 | Province of New York, Vermont Republic | |
| Kentucky | June 1, 1792 | Virginia | |
| Tennessee | June 1, 1796 | North Carolina, then Southwest Territory | |
| Ohio | March 1, 1803 | Northwest Territory | |
| Louisiana | April 30, 1812 | Orleans Territory | |
| Indiana | December 11, 1816 | Indiana Territory | |
| Mississippi | December 10, 1817 | Mississippi Territory | |
| Illinois | December 3, 1818 | Illinois Territory | |
| Alabama | December 14, 1819 | Alabama Territory | |
| Maine | March 15, 1820 | Massachusetts | |
| Missouri | August 10, 1821 | Missouri Territory | |
| Arkansas | June 15, 1836 | Arkansas Territory | |
| Michigan | January 26, 1837 | Michigan Territory | |
| Florida | March 3, 1845 | Florida Territory | |
| Texas | December 29, 1845 | Republic of Texas | |
| Iowa | December 28, 1846 | Iowa Territory | |
| Wisconsin | May 29, 1848 | Wisconsin Territory | |
| California | September 9, 1850 | Mexican Cession | |
| Minnesota | May 11, 1858 | Minnesota Territory | |
| Oregon | February 14, 1859 | Oregon Territory | |
| Kansas | January 29, 1861 | Kansas Territory | |
| West Virginia | June 20, 1863 | Virginia | |
| Nevada | October 31, 1864 | Nevada Territory | |
| Nebraska | March 1, 1867 | Nebraska Territory | |
| Colorado | August 1, 1876 | Colorado Territory | |
| North Dakota | November 2, 1889 | Dakota Territory | |
| South Dakota | November 2, 1889 | Dakota Territory | |
| Montana | November 8, 1889 | Montana Territory | |
| Washington | November 11, 1889 | Washington Territory | |
| Idaho | July 3, 1890 | Idaho Territory | |
| Wyoming | July 10, 1890 | Wyoming Territory | |
| Utah | January 4, 1896 | Utah Territory | |
| Oklahoma | Novemeber 16, 1907 | Oklahoma Territory and Indian Territory | |
| New Mexico | January 6, 1912 | New Mexico Territory | |
| Arizona | February 14, 1912 | Arizona Territory | |
| Alaska | January 3, 1959 | Alaska Territory | |
| Hawaii | August 21, 1959 | Hawaii Territory | |