Grantsville is a town in Calhoun County, West Virginia, United States.

[7][8] Grantsville is home to Wayne Underwood Park, which includes a .25-mile-long (0.40 km) walking trail, and to the annual West Virginia Wood Festival.

[10] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

There were 303 housing units at an average density of 688.6 per square mile (265.9/km2).

40.8% of all households were made up of individuals, and 20.2% had someone living alone who was 65 years of age or older.

There were 276 housing units at an average density of 606.3 per square mile (231.7/km2).

34.9% of all households were made up of individuals, and 15.5% had someone living alone who was 65 years of age or older.