West Hamlin is a town in Lincoln County, West Virginia, United States, along the Guyandotte River. The population was 519 at the 2020 census, and is now down to 509, according to the 2021 census. West Hamlin is a part of the Huntington-Ashland, WV-KY-OH, Metropolitan Statistical Area. West Hamlin is west of the county seat at Hamlin, hence the name.