Comerio, Puerto Rico, United States [ZonaUrbana]; population was 4,978 in 1990; housing units was 1,624 in 1990; location is 18°13'N 66°14'W; land area is 0.45 square miles (285 acres); water area is 0.01 square miles (8 acres); FIPS code is 19665 [SourceCBP]