Souderton Telford Main Streets Share: Associations & Organizations Souderton Telford Main Streets Visit Website 18 West Chestnut Street Souderton, PA 18964 (215) 723-6627 Souderton Telford Main Streets Facebook About About Souderton Telford Main Streets (STMS) is a 501(c) 3 non-profit corporation dedicated to the revitalization of Souderton and Telford Boroughs.