Monmouth Beach, New Jersey, United States [Borough]; population was 3,303 in 1990; housing units was 1,898 in 1990; location is 40°20'N 73°59'W; land area is 1.07 square miles (686 acres); water area is 0.85 square miles (546 acres); FIPS code is 47130 [SourceCBP]