State Timeline By stjosephschoolrocks Mar 1, 1803 Ohio is added to the United States of America Apr 30, 1812 Louisiana is added to the United States of America Dec 11, 1816 Indiana is added to the United States of America Dec 10, 1817 Mississippi is added to the United States of America Dec 30, 1818 Illinois is added to the United States of America Dec 14, 1819 Alabama is added to the United States of America Mar 15, 1820 Maine is added to the United States of America Aug 10, 1821 Missouri is added to the United States of America Jun 15, 1836 Arkansas is added to the United States of America Jan 26, 1837 Michigan is added to the United States of America Mar 3, 1845 Florida is added to the United States of America Dec 29, 1845 Texas is added to the United States of America Dec 28, 1846 Iowa is added to the United States of America May 29, 1848 Winsconsin is added to the United States of America Sep 9, 1850 California is added to the United States of America May 11, 1858 Minnesota is added to the United States of America Feb 14, 1859 Oregon is added to the United States of America