United States State and Territory Formation Years | |||||||||||||||
1776 | 1777 | 1783 | 1784 | 1785 | 1786 | 1787 | 1790 | 1791 | 1792 | 1795 | 1796 | 1798 | 1800 | 1802 | |
1803 | 1804 | 1805 | 1809 | 1810 | 1812 | 1816 | 1817 | 1818 | 1819 | 1820 | 1821 | 1822 | 1824 | 1828 | |
1834 | 1836 | 1837 | 1838 | 1842 | 1845 | 1846 | 1848 | 1849 | 1850 | 1853 | 1854 | 1858 | 1859 | 1860 | |
1861 | 1862 | 1863 | 1864 | 1866 | 1867 | 1868 | 1870 | 1876 | 1882 | 1889 | 1890 | 1893 | 1896 | 1907 | |
1912 | |||||||||||||||
U.S. County Formation Maps inbetween Census Years: | |||||||||||||||
1790-1799 | 1800-1809 | 1810-1819 | 1820-1829 | 1830-1839 | 1840-1849 | 1850-1859 | |||||||||
1860-1869 | 1870-1879 | 1880-1889 | 1890-1899 | 1900-1909 | 1910-1920 | ||||||||||
U.S. County Formation Maps all Years: | |||||||||||||||
1643-Present | 1643-1699 | 1700-1799 | 1800-1899 | 1900-Present |