 The city of Centralia, Washington borders Fords Prairie to the south.According to the United States Census Bureau, the CDP has a total area of 4.0 square miles (10.2 km²), of which, 3.9 square miles (10.1 km²) of it is land and 0.1 square miles (0.1 km²) of it (1.27%) is water.As of the census of 2000, there were 1,961 people, 785 households, and 588 families residing in the CDP.