PlainCities

Ranking · Colorado

Fastest-growing and fastest-shrinking places in Colorado

Timnath has the highest population change, 2020 to 2025 of Colorado's 150 ranked places (+78.5%); Vail has the lowest (−9.2%). Ranked: places with 1,000 or more residents in the 2020 Census that are incorporated (the Census Bureau estimates only those each year).

Which are the fastest-growing places?

Fastest-growing places in Colorado, first to fifth: Timnath (+78.5%), Elizabeth (+77.8%), Keenesburg (+68.0%), Deer Trail (+63.6%) and Severance (+53.5%).

Fastest-growing places in Colorado, by population change, 2020 to 2025.
RankPlaceTypePopulation change, 2020 to 2025ResidentsCounty
1 Timnathtown +78.5% 11,600Larimer County and 1 more
2 Elizabethtown +77.8% 2,957Elbert County
3 Keenesburgtown +68.0% 2,107Weld County
4 Deer Trailtown +63.6% 1,755Arapahoe County
5 Severancetown +53.5% 11,841Weld County
6 Bennetttown +47.1% 4,224Adams County and 1 more
7 Meadtown +47.0% 7,042Weld County
8 Castle Pinescity +41.3% 15,583Douglas County
9 Aulttown +41.2% 2,667Weld County
10 Berthoudtown +36.4% 14,080Larimer County and 1 more
11 Erietown +36.1% 40,904Weld County and 1 more
12 Windsortown +34.0% 43,840Weld County and 1 more
13 Wigginstown +33.3% 1,868Morgan County
14 Monumenttown +32.9% 13,813El Paso County
15 Fort Luptoncity +30.7% 10,402Weld County
16 Johnstowntown +29.5% 22,433Weld County and 1 more
17 Fredericktown +25.6% 18,241Weld County
18 Firestonetown +23.0% 20,129Weld County
19 Silverthornetown +22.8% 5,418Summit County
20 Granbytown +16.9% 2,392Grand County
21 Haydentown +16.5% 2,250Routt County
22 Commerce Citycity +15.9% 72,345Adams County
23 Castle Rocktown +14.6% 83,815Douglas County
24 Pagosa Springstown +14.2% 1,838Archuleta County
25 Gypsumtown +14.2% 9,212Eagle County

Source: Census Bureau population estimates, Vintage 2025 (SUB-EST2025) · Census population estimates

Which are the fastest-shrinking places?

Fastest-shrinking places in Colorado, first to fifth: Vail (−9.2%), Aspen (−7.1%), Julesburg (−6.8%), Fowler (−6.6%) and Telluride (−6.4%).

Fastest-shrinking places in Colorado, by population change, 2020 to 2025.
RankPlaceTypePopulation change, 2020 to 2025ResidentsCounty
150 Vailtown −9.2% 4,407Eagle County
149 Aspencity −7.1% 6,489Pitkin County
148 Julesburgtown −6.8% 1,217Sedgwick County
147 Fowlertown −6.6% 1,171Otero County
146 Telluridetown −6.4% 2,454San Miguel County
145 La Juntacity −6.4% 6,864Otero County
144 Manitou Springscity −5.9% 4,577El Paso County
143 Monte Vistacity −5.9% 4,005Rio Grande County
142 Minturntown −5.4% 986Eagle County
141 Sterlingcity −5.0% 13,054Logan County
140 Friscotown −4.5% 2,792Summit County
139 Lyonstown −4.1% 2,119Boulder County
138 Del Nortetown −4.1% 1,396Rio Grande County
137 Kremmlingtown −3.7% 1,451Grand County
136 Olathetown −3.7% 1,927Montrose County
135 Centertown −3.6% 1,890Saguache County and 1 more
134 Holyokecity −3.5% 2,264Phillips County
133 Dillontown −3.5% 1,029Summit County
132 Louisvillecity −3.1% 20,581Boulder County
131 Eagletown −3.1% 7,280Eagle County
130 Cripple Creekcity −3.0% 1,120Teller County
129 Glendale, Arapahoe Countycity −3.0% 4,475Arapahoe County
128 Rocky Fordcity −2.9% 3,752Otero County
127 Trinidadcity −2.9% 8,091Las Animas County
126 Springfieldtown −2.9% 1,293Baca County

Source: Census Bureau population estimates, Vintage 2025 (SUB-EST2025) · Census population estimates

How is this ranking made?

Each place's population change, 2020 to 2025 is read from the Census Bureau's April 1, 2020 estimates base and its July 1, 2025 estimate. A place enters the ranking if it had 1,000 or more residents in the 2020 Census and is incorporated. Ties in the published figure share a rank. This is a measurement of one figure, not a judgment of a place.

Source: PlainCities ranking method applied to the Census Bureau population estimates, Vintage 2025 (SUB-EST2025) · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections