According to the United States Census Bureau, the city has a total area of 4.1 square miles (10.6 km²), of which, 3.8 square miles (9.8 km²) of it is land and 0.3 square miles (0.8 km²) of it (7.34%) is water.
Gastown - A neighborhood in the northeast corner of Tonawanda, bordering the Erie Canal.