East Hanover, New Jersey, United States [CDP]; population was 9,926 in 1990; housing units was 3,112 in 1990; location is 40°49'N 74°22'W; land area is 8.19 square miles (5,239 acres); water area is 0.00 square miles (1 acres); FIPS code is 19240 [SourceCBP]