Original: According to the United States Census Bureau, the town has a total area of 35.6 square miles (92.2 km²), of which, 35.0 square miles (90.6 km²) of it is land and 0.6 square miles (1.6 km²) of it (1.74%) is water.
Simplified: Fairfield has an area of 35.6 square miles.