 Bay Center is located at (46.630051, -123.954630), near the mouth of the Palix River and Niawiakum River.According to the United States Census Bureau, the CDP has a total area of 0.4 square miles (1.0 km2), all of it land.As of the census of 2000, there were 174 people, 70 households, and 42 families residing in the CDP.