 North Catasauqua is located at (40.661896, -75.476015).According to the United States Census Bureau, the borough has a total area of 0.8 square miles (1.9 km2), of which, 0.7 square miles (1.9 km2) of it is land and 0.04 square miles (0.1 km2) of it (2.67%) is water.The Lehigh River and the Lehigh Canal and towpath provides the western border of the borough.