where is souderton, pa
Sponsored Topics. Souderton is a borough in Montgomery County, Pennsylvania. The population was 6,618 at the 2010 census. Souderton hosts the end of the annual Univest Grand Prix, a professional bicycle race. Souderton is located at 40Â°18â²37â³N 75Â°19â²18â³W / 40.31028Â°N 75.32167Â°W / 40.31028; -75.32167 (40.310215, -75.321682).