Original: According to the United States Census Bureau, the city has a total area of 18.7 square miles (48.3 km²), of which, 18.6 square miles (48.3 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.11%) is water.
Simplified: Sapulpa has an area of 18.7 square miles.