Ellwood City, Pennsylvania, United States [Borough]; population was 8,894 in 1990; housing units was 3,999 in 1990; location is 40°52'N 80°17'W; land area is 2.41 square miles (1,542 acres); water area is 0.06 square miles (41 acres); FIPS code is 23304 [SourceCBP]