Latest Data (2018)
Population 64,827
Nationwide Rank 578

Quick Facts

Castle Rock, Colorado is the 578th largest city in the United States as of 2018.

Castle Rock, Colorado is a town.

Castle Rock, Colorado is as large as it has ever been. In 2018 Castle Rock had its largest population ever.

Castle Rock, Colorado is growing extremely quickly. It is growing faster than 98% of similarly sized cities since 2000.

Castle Rock, Colorado Border Map

Similarly Sized Cities In US

US Rank Name Population Growth
2000-2018
568 Madera, California 65,706 50.4%
569 Schenectady, New York 65,575 6.1%
570 Jupiter, Florida 65,524 64.3%
571 Harlingen, Texas 65,436 11.2%
572 Ankeny, Iowa 65,284 136.6%
573 Blaine, Minnesota 65,212 43.4%
574 Wellington, Florida 65,200 67.8%
575 Bayonne, New Jersey 65,083 5.2%
576 Youngstown, Ohio 64,958 -20.5%
577 San Clemente, California 64,857 28.2%
578 Castle Rock, Colorado 64,827 209.8%
579 Eastvale, California 64,822
580 Santa Cruz, California 64,725 15.8%
581 Janesville, Wisconsin 64,565 6.8%
582 Tulare, California 64,475 40.5%
583 East Orange, New Jersey 64,457 -7.5%
584 Pflugerville, Texas 64,431 167.8%
585 Eden Prairie, Minnesota 64,334 16.4%
586 Port Orange, Florida 64,252 37.9%
587 Haverhill, Massachusetts 64,041 8.3%
588 Lorain, Ohio 64,028 -6.8%

Similarly Sized Cities In Colorado

US Rank Name Population Growth
2000-2018
236 Arvada 120,492 17.8%
256 Westminster 113,479 11.9%
264 Pueblo 111,750 9.4%
272 Centennial 110,831 8.1%
284 Boulder 107,353 13.4%
285 Greeley 107,348 36.9%
328 Longmont 96,577 33.6%
448 Loveland 77,446 49.2%
521 Broomfield 69,267 75.0%
578 Castle Rock 64,827 209.8%
593 Grand Junction 63,374 38.8%
651 Commerce City 58,449 176.3%
686 Parker 55,636 124.9%
813 Littleton 48,007 18.6%
936 Brighton 41,254 93.7%
999 Northglenn 39,010 20.2%
1113 Englewood 34,690 8.5%

Demographics

Population History

Year Population Rank in US
2018 64,827 578
2017 62,276 599
2016 57,666 651
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