Isla Vista, California, United States [CDP]; population was 20,395 in 1990; housing units was 5,513 in 1990; location is 34°25'N 119°51'W; land area is 2.12 square miles (1,358 acres); water area is 0.08 square miles (49 acres); FIPS code is 36868 [SourceCBP]