• county
  • FIPS 08069
  • Largest town: Fort Collins

Larimer County, Colorado

Larimer County had 374,574 residents in the Census Vintage 2024 estimate, on 2,595.8 square miles of land. It ranks 7th of 64 in Colorado by population and 9th by land area.

Population
374,574
#7 of 64 in Colorado · #205 in US
Area
2,595.8 sq mi
#9 of 64 in Colorado · #205 in US
Density
144 / sq mi
#9 of 64 in Colorado · #717 in US
Median household income
$88,519
#24 of 64 in Colorado · #265 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Larimer County within Colorado. Pin: Denver.

Measure from here

Tools and pages that start from Larimer County

Larimer County population, land area and income

Larimer County had 374,574 residents in the Census Vintage 2024 estimate, on 2,595.8 square miles of land. It ranks 7th of 64 in Colorado by population and 9th by land area. That works out to 144.3 people per square mile, 1.5 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Colorado has 15,336 residents, so Larimer County is 24.4 times that size.

Its SAIPE 2023 median household income of $88,519 is in the top tenth among 3,143 counties with an estimate.

National rank among 3,144

Population

374,574

3144th1st

205th of 3,144 (US)

Land area

2,596 sq mi

3144th1st

205th of 3,144 (US)

Density

144.3 / sq mi

3144th1st

717th of 3,144 (US)

Median household income

$88,519

3143rd1st

265th of 3,143 (US)

Rank within Colorado (64)

Population

374,574

64th1st

7th of 64 (CO)

Land area

2,596 sq mi

64th1st

9th of 64 (CO)

Density

144.3 / sq mi

64th1st

9th of 64 (CO)

Median household income

$88,519

64th1st

24th of 64 (CO)

How Larimer County's population changed since 2020

Larimer County gained 14,642 residents between the July 2020 and July 2024 estimates, a rise of 4.1%. That ranks 19th of 64 in Colorado for growth. The median Colorado county changed by +1.7%, and the state as a whole by +2.9%.

Since the April 2020 estimates base, Larimer County recorded 13,096 births and 11,717 deaths, a natural change of +1,379. Net international migration added +3,142 and net domestic migration, people moving to or from other US counties, came to +10,593. The largest single component was domestic migration, which added 10,593 people.

359.9k2020362.8k2021368.0k2022371.5k2023374.6k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
13,096
Deaths
11,717
Net international migration
+3,142
Net domestic migration
+10,593
Change, July 2023 to July 2024
+3,044

Where Larimer County is

The Census internal point of Larimer County is at 40.658100, -105.486800. It sits in UTM zone 13N. The map shades Colorado's 64 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Larimer County outlined. Dots are towns of 1,000+ people with residents in it.

Otero County: -3.6%Lake County: -0.6%Adams County: +4.3%Kit Carson County: +0.2%Phillips County: -0.9%Bent County: +5.5%Lincoln County: -1.1%Washington County: -0.9%Hinsdale County: -5.1%Alamosa County: +1.9%Kiowa County: -4.1%Arapahoe County: +1.8%Archuleta County: +5.1%Montrose County: +4.6%Jefferson County: -0.8%Gilpin County: +2.5%Larimer County: +4.1%Custer County: +17.5%Saguache County: +4.3%Mineral County: +7.1%Broomfield County: +5.1%Logan County: -2.1%Mesa County: +3.4%Eagle County: -2.4%Denver County: +1.6%Pitkin County: -4.2%Boulder County: -0.2%El Paso County: +2.6%Las Animas County: +0.1%San Miguel County: -2.9%Douglas County: +9.3%Cheyenne County: -1.9%Garfield County: +2.2%Ouray County: +6.5%San Juan County: +16.0%Yuma County: +0.8%Elbert County: +12.1%Prowers County: -0.5%Morgan County: +4.2%Delta County: +3.7%Chaffee County: +6.6%Huerfano County: +2.4%Teller County: +0.5%Costilla County: +5.3%Baca County: -3.3%Routt County: +1.6%Conejos County: +1.3%Summit County: -1.1%Clear Creek County: -3.0%Fremont County: +2.5%Rio Blanco County: +1.3%Dolores County: +5.8%Grand County: +2.6%Gunnison County: +2.1%Park County: +5.1%Sedgwick County: -5.5%Montezuma County: +3.7%La Plata County: +2.1%Moffat County: -1.0%Rio Grande County: -3.6%Weld County: +11.5%Pueblo County: +0.9%Jackson County: -7.6%Crowley County: -1.5%
Change 2020 to 2024
  1. < -1.9%
  2. < +0.5%
  3. < +2.4%
  4. < +5.1%
  5. ≥ +5.1%
no data

Orange pin: Larimer County internal point. Dark pin: Denver.

Internal point

Decimal
40.658100, -105.486800
DMS
40°39'29.16"N 105°29'12.48"W
UTM
13N 458848.5E 4500917.9N
Geohash
9xhzr9dfe
Plus code
85GPMG57+67

Towns in Larimer County

8 incorporated places of 1,000+ people have residents in Larimer County, 308,931 people together, or 82% of the county. Each figure counts only the part of the town inside Larimer County; towns marked "part" extend into another county. The largest is Fort Collins with 170,924.

  1. 01Fort Collins170,924
  2. 02Loveland81,102
  3. 03Berthoud (part)13,386
  4. 04Wellington12,100
  5. 05Timnath (part)10,833
  6. 06Windsor (part)9,154
  7. 07Estes Park5,795
  8. 08Johnstown (part)5,637
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Larimer County

The Census 2024 county adjacency file lists 6 neighbors for Larimer County, including 2 across a state line. The most populous is Weld County, CO, with 369,745 residents. Distances run between Census internal points in a straight line.

Distance to Denver and the nearest big city

Denver is 68.8 miles SSE of Larimer County's internal point in a straight line. The nearest place of 100,000 or more is Fort Collins, CO (population 170,924), 23.4 miles away.

Larimer County FIPS code

The FIPS code of Larimer County is 08069: state code 08 for Colorado plus county code 069. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $88,519.

Questions people ask

What is the population of Larimer County, Colorado?

The Census Vintage 2024 estimate for July 1, 2024 is 374,574. That is up 14,642 people (4.1%) from the July 2020 estimate of 359,932.

What is the FIPS code of Larimer County?

08069. The first two digits (08) are Colorado; the last three (069) identify the county.

What is the largest town in Larimer County?

Fort Collins, with 170,924 residents inside Larimer County in 2024.

Which counties border Larimer County?

6 county-equivalents border it in the Census 2024 adjacency file: Weld County, CO; Boulder County, CO; Laramie County, WY; Albany County, WY; Grand County, CO; Jackson County, CO.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

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