Fallbrook, California, United States [CDP]; population was 22,095 in 1990; housing units was 7,767 in 1990; location is 33°22'N 117°14'W; land area is 10.88 square miles (6,962 acres); water area is 0.04 square miles (27 acres); FIPS code is 23462 [SourceCBP]