Admission of States to the Union
| 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 |
| Hawaii |
August 21, 1959 |