Highlands Ranch, Colorado, United States [CDP]; population was 10,181 in 1990; housing units was 3,751 in 1990; location is 39°33'N 104°58'W; land area is 4.84 square miles (3,100 acres); water area is 0.00 square miles (0 acres); FIPS code is 36410 [SourceCBP]