Tullytown is a borough in Bucks County, Pennsylvania, United States. The population was 1,872 at the 2010 census. Part of Levittown is located in Tullytown.
Tullytown is located at 40°8′42″N 74°49′4″W / 40.145°N 74.81778°W / 40.145; -74.81778 (40.145077, -74.817841).
According to the United States Census Bureau, the borough has a total area of 2.1 square miles (5.4 km²), of which, 1.6 square miles (4.1 km²) of it is land and 0.5 square miles (1.3 km²) of it (24.88%) is water.