County	Established	Map
Barbour County	1843
Berkeley County	1772
Boone County	1847
Braxton County	1836
Brooke County	1796
Cabell County	1809
Calhoun County	1856
Clay County	1858
Doddridge County	1845
Fayette County	1831
Gilmer County	1845
Grant County	1866
Greenbrier County	1778
Hampshire County	1754
Hancock County	1848
Hardy County	1786
Harrison County	1784
Jackson County	1831
Jefferson County	1801
Kanawha County	1789
Lewis County	1816
Lincoln County	1867
Logan County	1824
Marion County	1842
Marshall County	1835
Mason County	1804
McDowell County	1858
Mercer County	1837
Mineral County	1866
Mingo County	1895
Monongalia County	1776
Monroe County	1799
Morgan County	1820
Nicholas County	1818
Ohio County	1776
Pendleton County	1788
Pleasants County	1851
Pocahontas County	1821
Preston County	1818
Putnam County	1848
Raleigh County	1850
Randolph County	1787
Ritchie County	1843
Roane County	1856
Summers County	1871
Taylor County	1844
Tucker County	1856
Tyler County	1814
Upshur County	1851
Wayne County	1842
Webster County	1860
Wetzel County	1846
Wirt County	1848
Wood County	1798
Wyoming County	1850