Encinitas, California, United States [City]; population was 55,386 in 1990; housing units was 22,123 in 1990; location is 33°3'N 117°16'W; land area is 17.95 square miles (11,487 acres); water area is 0.54 square miles (345 acres); FIPS code is 22678 [SourceCBP]