West Hamlin is a town in Lincoln County, West Virginia, United States, along the Guyandotte River. The population was 774 at the 2010 census. West Hamlin is a part of the Huntington-Ashland, WV-KY-OH, Metropolitan Statistical Area (MSA). As of the 2010 census, the MSA had a population of 287,702. New estimates from February 28, 2013 placed the population at 363,000. West Hamlin is west of the county seat at Hamlin, hence the name.