Fayette County is a county in the U.S. state of West Virginia. As of the 2020 census, the population was 40,488. Its county seat is Fayetteville. It is part of the Beckley, WV Metropolitan Statistical Area in Southern West Virginia.

Greenbrier County is a county in the U.S. state of West Virginia. As of the 2020 census, the population was 32,977. Its county seat is Lewisburg. The county was formed in 1778 from Botetourt and Montgomery counties in Virginia.