Zip code 80906 statistics: (Find on map) Estimated zip code population in 2016: 37,362 Zip code population in 2010: 37,719 Zip code population in 2000: 49,059 Mar. 2016 cost of living index in zip code 80906: 100.7 (near average, U.S. average is 100) Land area: 46.6 sq. mi. Water area: 0.2 sq. mi. read more