Addison, commonly known as Webster Springs, is a town in and the county seat of Webster County, West Virginia, United States. Although it was incorporated as Addison in 1892, it is more frequently referred to as Webster Springs, the name of the town's post office. It was named for Addison McLaughlin, upon whose land the town was originally laid out. The population was 731 at the 2020 census. The town was famous in the late 19th and early 20th centuries for its numerous salt sulfur water wells.