Hawaii.
Hawaii was admitted into the Union on August 21, 1959 becoming the 50th state to join the union.
Hawaii was admitted into the Union on August 21, 1959 becoming the 50th state to join the union.
The most recent state is Hawaii, founded in 1959.
North Carolina was the only state admitted in 1789 (#12). Rhode Island was the only state admitted in 1790 (#13). Vermont was the only state admitted in 1791 (#14). Kentucky was the only state admitted in 1792 (#15). Tennessee was the only state admitted in 1796 (#16). Ohio was the only state admitted in 1803 (#17). Louisiana was the only state admitted in 1812 (#18). Indiana was the only state admitted in 1816 (#19). Mississippi was the only state admitted in 1817 (#20). Illinois was the only state admitted in 1818 (#21). Alabama was the only state admitted in 1819 (#22). Maine was the only state admitted in 1820 (#23). Missouri was the only state admitted in 1821 (#24). Arkansas was the only state admitted in 1836 (#25). Michigan was the only state admitted in 1837 (#26). Iowa was the only state admitted in 1846 (#29). Wisconsin was the only state admitted in 1848 (#30). California was the only state admitted in 1850 (#31). Minnesota was the only state admitted in 1858 (#32). Oregon was the only state admitted in 1859 (#33). Kansas was the only state admitted in 1861 (#34). West Virginia was the only state admitted in 1863 (#35). Nevada was the only state admitted in 1864 (#36). Nebraska was the only state admitted in 1867 (#37). Colorado was the only state admitted in 1876 (#38). Utah was the only state admitted in 1896 (#45). Oklahoma was the only state admitted in 1907 (#46).
Texas was admitted to the Union on December 29, 1845.
Technically, any city in Hawaii is the most recent addition to United States, as Hawaii wasn't founded as a state until 1959. But Hawaii's cities were already established by then, so the most recent city to be established and built in the United States is Las Vegas, founded in 1905.
Hawaii is the 50th US state, and the most recent to gain statehood. Hawaii became a state on August 21, 1959, eight months after the admission of Alaska as the 49th state.
Maryland was the 7th state admitted to the Union. It was admitted on April 28, 1788. Alaska was the 49th state admitted. It was admitted on January 3, 1959.
Alaska was admitted into the Union on January 3, 1959 becoming the 49th state to join the Union. Hawaii was admitted into the Union on August 21, 1959 becoming the 50th state to join the union.
Under the Missouri Compromise of 1820 Missouri was admitted as a slave state and Maine as a free state.
Hawaii was the last state to be admitted to the United States.