Lex is an unincorporated community in McDowell County, West Virginia, United States. Lex is located on West Virginia Route 80, 1.3 miles no…Lex is an unincorporated community in McDowell County, West Virginia, United States. Lex is located on West Virginia Route 80, 1.3 miles north of Bradshaw. Elexious "Lex" Evans, an early postmaster, gave the community his name.