Lincroft, New Jersey, United States [CDP]; population was 6,193 in 1990; housing units was 2,088 in 1990; location is 40°20'N 74°8'W; land area is 4.66 square miles (2,985 acres); water area is 0.01 square miles (6 acres); FIPS code is 40320 [SourceCBP]