St. Joseph County /

St. Joseph County is a county in the U.S. state of Michigan. The population was 62,422 at the 2000 census. The county seat is Centreville. According to the 2000 census, the county has a total area of 521.15 square miles (1,349.8 km), of which 503.72 square miles (1,304.6 km) (or 96.66%) is land and 17.43 square miles (45.1 km) (or 3.34%) is water. As of the census of 2000, there were 62,422 people, 23,381 households, and 16,600 families residing in the county. The population density was 124 people per square mile (48/km²). There were 26,503 housing units at an average density of 53 per square mile (20/km²). The racial makeup of the county was 93.49% White, 2.58% Black or African American, 0.38% Native American, 0.58% Asian, 0.01% Pacific Islander, 1.51% from other races, and 1.46% from two or more races. 3.99% of the population were Hispanic or Latino of any race. 92.9% spoke English, 3.7% Spanish and 1.6% German as their first language. There were 23,381 households out of which 34.10% had children under the age of 18 living with them, 55.90% were married couples living together, 10.40% had a female householder with no husband present, and 29.00% were non-families. 23.60% of all