Latest Data (2015)
Population 55,591
Nationwide Rank 671

Quick Facts

Castle Rock, Colorado is the 671st largest city in the United States as of 2015.

Castle Rock, Colorado is a town.

Castle Rock, Colorado is as large as it has ever been. In 2015 Castle Rock had its largest population ever.

Castle Rock, Colorado is growing extremely quickly. It is growing faster than 99% of similarly sized cities since 2000.

Castle Rock, Colorado Border Map

Similarly Sized Cities

Rank Name Growth
2000-2015
665 Hendersonville, Tennessee 36.4%
666 Weymouth Town, Massachusetts
667 Rocky Mount, North Carolina -5.1%
668 Corvallis, Oregon 12.8%
669 Valdosta, Georgia 20.7%
670 Hanford, California 32.6%
671 Castle Rock, Colorado 165.6%
672 Greenwood, Indiana 51.3%
673 Hempstead, New York 4.4%
674 Novato, California 16.1%
675 Kettering, Ohio -3.7%
676 Bellevue, Nebraska 24.6%
677 Shoreline, Washington 4.2%

Demographics

Population History

Year Population Rank in US
2015 55,591 671
2014 55,747 661
2013 53,063 692
2012 51,348 709
2011 50,085 718
2010 48,231 744
2009 45,691 772
2008 44,362 787
2007 42,337 811
2006 39,077 872
2005 35,249 963
2004 32,313 1,032
2003 29,709 1,112
2002 25,769 1,268
2001 23,192 1,385
2000 20,924 1,517
1990 8,244 2,851