Wilbraham, Massachusetts, United States [CDP]; population was 3,352 in 1990; housing units was 1,196 in 1990; location is 42°8'N 72°26'W; land area is 5.64 square miles (3,612 acres); water area is 0.05 square miles (33 acres); FIPS code is 79705 [SourceCBP]