Columbine, Colorado, United States [CDP]; population was 23,969 in 1990; housing units was 8,112 in 1990; location is 39°35'N 105°4'W; land area is 6.42 square miles (4,108 acres); water area is 0.13 square miles (85 acres); FIPS code is 16110 [SourceCBP]