Agoura Hills, California, United States [City]; population was 20,390 in 1990; housing units was 6,927 in 1990; location is 34°9'N 118°46'W; land area is 8.17 square miles (5,227 acres); water area is 0.03 square miles (19 acres); FIPS code is 394 [SourceCBP]