The City of Centennial is a home rule municipality located in Arapahoe County, Colorado, United States.
The city population was 108,418, as of 2020, making Centennial the 11th most populous municipality in Colorado.
The City of Centennial was formed on February 7, 2001, from portions of unincorporated Arapahoe County, including the former Castlewood and Southglenn census-designated places.
In 2008, Centennial voters approved a referendum by approximately a 2-to-1 margin making Centennial a home rule city.
Centennial is roughly divided in half by Interstate 25, with most of its business and entertainment centres lying west of the highway.
The city has a total area of 19,115 acres including 94 acres of water.
Centennial is located at 39°35’47” North, and 104°50’38” West.
Centennial was chosen in 2008 as the site of the first IKEA store in Colorado. The IKEA Centennial location opened on July 27, 2011. It is the second-largest IKEA store in the United States.
