Tocsin is an unincorporated community in Lancaster Township, Wells County, in the U.S. state of Indiana. It is on the border with Jefferson Township. History Tocsin was platted in 1884. A post office was established at Tocsin in 1882, and remained in operation until it was discontinued in 1966. Geography Tocsin is located at . References Unincorporated communities in Wells County, Indiana Unincorporated communities in Indiana Fort Wayne, IN Metropolitan Statistical Area