Somerset is an incorporated town in Montgomery County, Maryland, United States, located near the border with Washington, D.C. The population was 1,187 at the 2020 census. The land that would become Somerset was originally a part of the 3,124-acre Friendship Tract patented by Benedict Calvert, 4th Baron Baltimore, to Col. Thomas Addison an…Somerset is an incorporated town in Montgomery County, Maryland, United States, located near the border with Washington, D.C. The population was 1,187 at the 2020 census. The land that would become Somerset was originally a part of the 3,124-acre Friendship Tract patented by Benedict Calvert, 4th Baron Baltimore, to Col. Thomas Addison and James Stoddart in 1711. By 1811, a 211-acre portion of that tract, dubbed Friendship, was owned by Richard Williams, a farmer.