Municipality of Monroeville, Pennsylvania, United States [Borough]; population was 29,169 in 1990; housing units was 12,644 in 1990; location is 40°26'N 79°46'W; land area is 19.78 square miles (12,661 acres); water area is 0.01 square miles (6 acres); FIPS code is 52330 [SourceCBP]