Columbine, Colorado Columbine, Colorado Columbine is a census-designated place (CDP) in Arapahoe and Jefferson counties in the U.S. state of Colorado. Located mostly in Jefferson County, it lies immediately west of Littleton. The population was 24,280 at the 2010 census. Columbine High School, made infamous by the Columbine High School massacre in April 1999, is located in the community. The ZIP codes for the community are 80123 and 80128. Columbine is located on the eastern edge of Jefferson County at (39.587887, -105.069332), with a small portion extending east into Arapahoe County. Columbine is bordered to the east by Littleton and Columbine Valley,
Columbine High School massacre departing Columbine for their lunch break observed Brown heading down South Pierce Street away from the school. Meanwhile, Harris and Klebold armed themselves, hiding weapons beneath black trench coats with straps and webbing, and carrying backpacks and duffel bags filled with pipe bombs and ammunition. Harris also had his shotgun in one of the bags. Beneath the trench coats, Harris wore a white T-shirt which read "Natural Selection" in black letters, as well as a homemade bandolier; Klebold wore a black T-shirt which read "Wrath" in red letters. They climbed to the top of the outdoor steps which led up