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 progress of the SWAT teams during the shooting. Sheriff Stone did not seek reelection. Police followed the traditional tactic at Columbine: surround the building, set up a perimeter, and contain the damage. That approach has been replaced by a tactic that takes into account the presence of an active shooter whose interest is to kill, not to take hostages, known as the Immediate Action Rapid Deployment tactic. This tactic calls for a four-person team to advance into the site of any ongoing shooting, optimally a diamond-shaped wedge, but even with just a single officer if more are not available. Police