Maps&Census 
Harrison HomeThe area now known as West Virginia was part of the Commonwealth of Virginia until June 20, 1863.
| County Formed | Date | Counties from which formed |
| Barbour | 1843 | Harrison, Lewis, Randolph |
| Berkeley | 1772 | Frederick |
| Boone | 1847 | Cabel, Kanawha, Logan |
| Braxton | 1836 | Kanawha, Lewis, Nicholas |
| Brooke | 1797 | Ohio |
| Cabell | 1809 | Kanawha |
| Calhoun | 1856 | Gilmer |
| Clay | 1858 | Braxton, Nicholas |
| Doddridge | 1845 | Harrison, Lewis Ritchie, Tyler |
| Fayette | 1831 | Greenbrier, Kanawha, Logan & Nicholas |
| Gilmer | 1845 | Kanawha, Lewis |
| Grant | 1866 | Hardy |
| Greenbrier | 1778 | Botetourt, Montgomery |
| Hampshire | 1754 | Augusta, Frederick |
| Hancock | 1848 | Brooke |
| Hardy | 1786 | Hampshire |
| Harrison | 1784 | Monongalia |
| Jackson | 1831 | Kanahwa, Mason, Wood |
| Jefferson | 1801 | Berkeley |
| Kanawha | 1788 | Greenbrier & Montgomery |
| Lewis | 1816 | Harrison |
| Lincoln | 1867 | Boone, Cabell, Kanawha, Putnam |
| Logan | 1824 | Cabell, Giles, Kanawha, Tazwell |
| Marion | 1842 | Harrison, Monongalia |
| Marshall | 1835 | Ohio |
| Mason | 1804 | Kanawha |
| Mercer | 1837 | Giles, Tazewell |
| Mineral | 1866 | Hampshire |
| Mingo | 1895 | Logan |
| Monongalia | 1776 | West Augusta District |
| Monroe | 1799 | Greenbrier |
| Morgan | 1820 | Berkeley, Hampshire |
| McDowell | 1858 | Tazewell |
| Nicholas | 1818 | Greenbrier, Kanawha, Randolph |
| Ohio | 1776 | West Augusta District |
| Pendleton | 1788 | Augusta, Hardy, Rockingham |
| Pleasants | 1851 | Ritchie, Tyler, Wood |
| Pocahontas | 1821 | Bath, Pendleton, Randolph |
| Preston | 1818 | Monongalia |
| Putnam | 1848 | Cabell, Kanawha, Mason |
| Raleigh | 1850 | Fayette |
| Randolph | 1787 | Harrison |
| Ritchie | 1843 | Harrison, Lewis, Wood |
| Roane | 1856 | Gilmer, Jackson, Kanawha |
| Summers | 1871 | Fayette, Greenbrier, Mercer, Monroe |
| Taylor | 1844 | Barbour, Harrison, Marion |
| Tucker | 1856 | Randolph |
| Tyler | 1814 | Ohio |
| Upshur | 1851 | Barbour, Lewis, Randolph |
| Wayne | 1842 | Cabell |
| Webster | 1860 | Braxton, Nicholas, Randolph |
| Wetzel | 1846 | Tyler |
| Wirt | 1848 | Jackson, Wood |
| Wood | 1798 | Harrison |
| Wyoming | 1850 | Logan |
*Boldface denotes Virginia counties.