Port Monmouth, New Jersey, United States [CDP]; population was 3,558 in 1990; housing units was 1,281 in 1990; location is 40°26'N 74°6'W; land area is 1.32 square miles (847 acres); water area is 0.02 square miles (12 acres); FIPS code is 60360 [SourceCBP]