Logan County is a county in the U.S. state of West Virginia. As of the 2020 census, the population was 32,567. Its county seat is Logan. Logan County comprises the Logan, WV Micropolitan Statistical Area, which is also included in the Charleston–Huntington–Ashland, WV–OH–KY Combined Statistical Area.

Logan is a city in Logan County, West Virginia, United States, along the Guyandotte River. The population was 1,438 at the 2020 census. It is the county seat of Logan County.