The City of Centennial was the largest incorporation of its kind in U.S. history when it was created in 2001. Residents voted to incorporate the City of Centennial on September 12, 2000 and elected its first officials on February 6, 2001. Centennial officially became a city on February 7, 2001.  It is a place where tomorrow is better than yesterday and where we plan for the future and include our citizens in that vision. We believe our best days are ahead of us.  Centennial is the seventh largest city in the metro Denver area.

The City is located in the southern Denver metropolitan area, entirely within Arapahoe County. Centennial is adjacent to the cities and towns of Aurora, Englewood, Foxfield, Greenwood Village, Highlands Ranch (unincorporated Douglas County), Littleton, Lone Tree, and Parker.  Centennial encompasses 28.34 miles and has approximately 103,000 residents and 36,200 households.