Colorado · Census place 0827425

Fort Collins, Colorado

Fort Collins is a city in Larimer County, Colorado with an estimated 170,924 residents on July 1, 2024. It is the 4th largest of 149 incorporated places of 1,000+ people in the state.

Population 2024
170,924
#4 of 149 in Colorado
Change since 2020
+0.5%
+934 people
Land area
57.2 sq mi
+ 1.26 sq mi water
Density
2,986 / sq mi
State median 1,848
Orange pin: Fort Collins. Shaded: its county. Dark pin: Denver.

Fort Collins population, 2020 to 2024

Fort Collins added 934 residents from July 2020 to July 2024, a change of +0.5%. In the latest year it moved by +194. Among 79 Colorado places of 5,000 or more, that growth ranks 53rd; the median place changed by +3.0%. The median place of 5,000+ in Colorado has 14,061 people, so Fort Collins is 12.2 times that size.

170.0k2020169.3k2021170.3k2022170.7k2023170.9k2024
July 1 estimates. The April 2020 estimates base was 169,826. The axis starts above zero so yearly changes are visible.

Fort Collins covers 57.24 square miles of land and 1.26 of water, for 2,986 people per square mile of land. The median Colorado place of 5,000+ has 1,848, so Fort Collins is denser than the typical town.

What county Fort Collins is in

All of Fort Collins's residents live in Larimer County, which had 374,574 residents in 2024. Fort Collins holds 45.6% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Fort Collins

5 ZIP Code Tabulation Areas (ZCTAs) overlap Fort Collins by at least 10% of the ZCTA's or the city's land: 80521, 80524, 80525, 80526, 80528. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Fort Collins is

The Census internal point of Fort Collins is at 40.548200, -105.064800. Denver, the capital, is 56.1 miles S in a straight line. The nearest larger place is Denver, CO (729,019 people), 55.2 miles away. The nearest city of 100,000 or more is Greeley, CO, 17.8 miles away. The ground at the internal point is about 1,524 m (5,000 ft) above sea level.

Internal point

Decimal
40.548200, -105.064800
DMS
40°32'53.52"N 105°03'53.28"W
UTM
13N 494513.2E 4488607.0N
Geohash
9xjq9jw4k
Plus code
85GPGWXP+73
Time zone
America/Denver

Daylight in Fort Collins

At 40.55° N, Fort Collins gets about 15 h 05 min of daylight around the June solstice and 9 h 16 min around the December solstice, a swing of 5 h 48 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026. Month-by-month sunrise and sunset times are on the Fort Collins daylight page.

Places near Fort Collins

The eight nearest incorporated places of 1,000+ in Colorado, measured between internal points. The closest is Timnath, 5.4 miles away, with 10,848 people.

Questions people ask

What is the population of Fort Collins, CO?

170,924 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 934 (0.5%) from 169,990 in July 2020.

What county is Fort Collins in?

Larimer County. All of its residents live in that county.

What ZIP codes cover Fort Collins?

5 ZIP Code Tabulation Areas overlap it by at least 10% of either area: 80521, 80524, 80525, 80526, 80528.

How far is Fort Collins from Denver?

56.1 miles (90.2 km) in a straight line, heading S from Fort Collins.

What is the nearest larger city to Fort Collins?

Denver, CO, with 729,019 residents, 55.2 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

  1. 01Census Vintage 2024 subcounty population estimates
  2. 02Census 2024 Gazetteer, places
  3. 03Census 2020 ZCTA to place relationship file
  4. 04Census 2024 cartographic boundary file, counties (1:5,000,000)
  5. 05Open-Meteo forecast API (time zone and Copernicus GLO-90 elevation) (last verified 2026-09-30)

How every number is computed: methodology. Spotted a wrong figure? Report an error.