Seaside Park, New Jersey, United States [Borough]; population was 1,871 in 1990; housing units was 2,454 in 1990; location is 39°56'N 74°5'W; land area is 0.65 square miles (417 acres); water area is 0.11 square miles (73 acres); FIPS code is 66480 [SourceCBP]