Trabuco Highlands, California, United States [CDP]; population was 3,191 in 1990; housing units was 1,302 in 1990; location is 33°37'N 117°34'W; land area is 5.69 square miles (3,640 acres); water area is 0.00 square miles (2 acres); FIPS code is 80217 [SourceCBP]