Glassport, Pennsylvania, United States [Borough]; population was 5,582 in 1990; housing units was 2,508 in 1990; location is 40°20'N 79°53'W; land area is 1.68 square miles (1,077 acres); water area is 0.21 square miles (136 acres); FIPS code is 29432 [SourceCBP]