Randallstown, Maryland, United States [CDP]; population was 26,277 in 1990; housing units was 9,866 in 1990; location is 39°22'N 76°48'W; land area is 10.28 square miles (6,579 acres); water area is 0.00 square miles (0 acres); FIPS code is 64950 [SourceCBP]