Fastest Growing Cities in Colorado.

Cities in Colorado with the fastest population growth, April 2020 to July 2025.

67 cities ranked · See the national list

#	City	Population	Population Growth
1	Castle Pines	13,388	+41.3%
2	Berthoud	12,411	+36.4%
3	Erie	33,808	+36.1%
4	Windsor	37,914	+34.0%
5	Monument	11,735	+32.9%
6	Johnstown	18,883	+29.5%
7	Frederick	16,651	+25.6%
8	Firestone	18,049	+23.0%
9	Commerce City	66,445	+15.9%
10	Castle Rock	79,123	+14.6%
11	Brighton	42,059	+13.3%
12	Parker	61,783	+13.0%
13	Edwards	10,785	+11.4%
14	Pueblo West	35,681	+9.9%
15	Wellington	11,798	+9.9%
16	Grand Junction	68,142	+9.4%
17	The Pinery	11,871	+8.6%
18	Lone Tree	14,147	+7.8%
19	Broomfield	76,304	+6.8%
20	Loveland	78,410	+6.6%
21	Aurora	394,432	+6.2%
22	Montrose	21,044	+6.2%
23	Greeley	110,806	+5.8%
24	Englewood	34,129	+4.9%
25	Fruita	13,691	+4.5%
26	Glenwood Springs	10,241	+4.4%
27	Thornton	144,187	+4.2%
28	Black Forest	15,738	+4.1%
29	Superior	13,305	+4.1%
30	Rifle	10,570	+3.9%
31	Denver	718,877	+3.5%
32	Durango	19,411	+3.4%
33	Colorado Springs	487,887	+3.1%
34	Steamboat Springs	13,433	+2.5%
35	Gunbarrel	10,051	+2.2%
36	Northglenn	38,014	+2.1%
37	Fort Morgan	11,605	+2.1%
38	Columbine	25,478	+1.4%
39	Evans	22,396	+1.4%
40	Littleton	44,710	+1.3%
41	Welby	16,197	+1.3%
42	Longmont	99,406	+1.2%
43	Fort Collins	170,229	+1.0%
44	Sherrelwood	18,692	+0.8%
45	Lakewood	156,583	+0.6%
46	Centennial	108,201	+0.6%
47	Cimarron Hills	19,817	+0.4%
48	Golden	20,417	-0.1%
49	Westminster	115,484	-0.4%
50	Cañon City	17,122	-0.5%
51	Lafayette	30,602	-0.8%
52	Wheat Ridge	32,070	-1.0%
53	Arvada	122,634	-1.2%
54	Fountain	29,300	-1.2%
55	Pueblo	111,561	-1.3%
56	Dakota Ridge	33,753	-1.4%
57	Ken Caryl	33,233	-1.9%
58	Greenwood Village	15,420	-2.2%
59	Federal Heights	14,125	-2.3%
60	Security-Widefield	37,345	-2.4%
61	Boulder	106,433	-2.6%
62	Louisville	20,786	-3.1%
63	Highlands Ranch	102,257	-4.0%
64	Clifton	19,518	-4.8%
65	Sterling	13,172	-5.0%
66	Berkley	10,789	-8.8%
67	Cherry Creek	10,721	-11.9%