Tamalpais-Homestead Valley, California, United States [CDP]; population was 9,601 in 1990; housing units was 4,251 in 1990; location is 37°53'N 122°32'W; land area is 2.89 square miles (1,849 acres); water area is 0.01 square miles (8 acres); FIPS code is 77805 [SourceCBP]