Sellersville is a borough in Bucks County, Pennsylvania, United States. The population was 4,249 at the 2010 census. Sellersville is part of Pennridge School District.
Sellersville is located at 40°21′31″N 75°18′36″W / 40.35861°N 75.31°W / 40.35861; -75.31 (40.358565, -75.310082).
According to the United States Census Bureau, the borough has a total area of 1.2 square miles (3.1 km²), of which, 1.2 square miles (3.0 km²) of it is land and 0.04 square miles (0.1 km²) of it (1.69%) is water. It is located in Southeastern Pennsylvania as part of Northern Bucks County (colloquially referred to as Upper Bucks) which borders Philadelphia County.