Demographics of Larimer County, Colorado

Larimer County, Colorado had 377,292 people on July 1, 2025, by the Census Bureau’s estimate: +17,350 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Larimer County, in four figures

377,292
Population: July 1, 2025, Vintage 2025 estimate.; +4.8%
Change since July 2020: +17,350 people.; 36.8 ±0.2
Median age: ACS 2020–⁠2024.; $93,765 ±$1,936
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Larimer County, Colorado's population grew 4.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Larimer County, Colorado's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Larimer County, Colorado's population grew 4.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Larimer County, Colorado's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	359,942	100.0	100.0
2021	362,865	100.8	100.2
2022	367,972	102.2	100.7
2023	371,192	103.1	101.6
2024	374,200	104.0	102.5
2025	377,292	104.8	103.1

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Population of Larimer County, Colorado on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	359,942	+873	+158	+3	+663
2021	362,865	+2,923	+325	+179	+2,220
2022	367,972	+5,107	+234	+698	+4,036
2023	371,192	+3,220	+187	+866	+2,197
2024	374,200	+3,008	+262	+1,409	+1,352
2025	377,292	+3,092	+471	+564	+2,050

Age, 2020–2024

The median age is 36.8 ±0.2: for men 36.1 ±0.2 and for women 37.8 ±0.3. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Larimer County by age, ACS 2020–2024
Age	People	Share	Colorado	United States
Under 5	15,898 ±196	4.3% ±0.1	5.3% ±<0.1	5.6% ±<0.1
5 to 17	51,441 ±1,249	14.0% ±0.3	15.7% ±0.1	16.3% ±<0.1
18 to 24	52,242 ±1,682	14.2% ±0.5	9.1% ±0.1	9.1% ±<0.1
25 to 44	101,888 ±1,340	27.7% ±0.4	30.3% ±0.1	26.9% ±<0.1
45 to 64	82,135 ±1,279	22.4% ±0.3	23.9% ±0.1	24.8% ±<0.1
65 and over	63,764 ±1,550	17.4% ±0.4	15.6% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $93,765 ±$1,936, and income per person $51,165 ±$954, in 2024 dollars. The median is $95,470 ±$578 in Colorado and $80,734 ±$166 in the United States.

Households by income

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Households in Larimer County by income, ACS 2020–2024
Household income	Households	Share	Colorado	United States
Under $25,000	18,304 ±1,104	11.9% ±0.7	11.2% ±0.2	14.6% ±<0.1
$25,000 to $49,999	21,742 ±1,299	14.1% ±0.8	13.6% ±0.2	16.7% ±<0.1
$50,000 to $74,999	22,444 ±1,181	14.6% ±0.8	14.6% ±0.2	15.5% ±<0.1
$75,000 to $99,999	19,445 ±1,118	12.6% ±0.7	12.8% ±0.2	12.6% ±<0.1
$100,000 to $149,999	30,731 ±1,364	19.9% ±0.9	19.2% ±0.2	17.5% ±<0.1
$150,000 to $199,999	17,260 ±1,071	11.2% ±0.7	11.7% ±0.2	9.6% ±<0.1
$200,000 or more	24,306 ±1,228	15.8% ±0.8	17.0% ±0.2	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Larimer County by age, ACS 2020–2024
Age	Below poverty	Rate	Colorado	United States
All ages	39,999 ±2,160	11.2% ±0.6	9.4% ±0.2	12.5% ±0.1
Under 18	5,420 ±724	8.2% ±1.1	11.1% ±0.3	16.1% ±0.1
18 to 59	28,429 ±1,582	13.7% ±0.7	9.1% ±0.2	11.6% ±0.1
60 and over	6,150 ±546	7.3% ±0.6	8.7% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Larimer County, ACS 2020–2024
Measure	Larimer County	Colorado	United States
Housing units	164,690 ±127	2,589,053 ±653	143,775,355 ±10,234
Occupied	93.6% ±0.5	91.7% ±0.2	89.9% ±0.1
Vacant	6.4% ±0.5	8.3% ±0.2	10.1% ±0.1
Owner occupied	64.0% ±0.7	66.2% ±0.3	65.2% ±0.3
Renter occupied	36.0% ±0.8	33.8% ±0.3	34.8% ±0.1
Median home value	$569,100 ±$7,549	$539,400 ±$2,069	$332,700 ±$236
Median gross rent	$1,716 ±$22	$1,761 ±$7	$1,413 ±$2
Median year built	1993 ±1	1988 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Larimer County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Colorado	United States
Hispanic or Latino	47,521 ±0	12.9% ±<0.1	22.5% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	291,045 ±821	79.2% ±0.2	64.8% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	3,616 ±376	1.0% ±0.1	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	8,054 ±509	2.2% ±0.1	3.2% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	795 ±161	0.2% ±<0.1	0.4% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	345 ±80	0.1% ±<0.1	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	2,095 ±552	0.6% ±0.2	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	13,897 ±872	3.8% ±0.2	4.6% ±0.1	4.3% ±<0.1

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Larimer County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Colorado	United States
Born in the state	141,730 ±2,968	38.6% ±0.8	41.2% ±0.2	57.3% ±<0.1
Born in another state	200,994 ±3,159	54.7% ±0.9	47.2% ±0.2	26.9% ±<0.1
Born a citizen outside the states	4,314 ±562	1.2% ±0.2	1.7% ±0.1	1.7% ±<0.1
Born abroad	20,330 ±1,287	5.5% ±0.4	9.8% ±0.1	14.1% ±<0.1
Naturalized citizens	10,596 ±895	2.9% ±0.2	4.7% ±0.1	7.4% ±<0.1
Not citizens	9,734 ±909	2.6% ±0.2	5.2% ±0.1	6.8% ±<0.1

Larimer County among the counties of Colorado

8th of 64 by population, July 2025. Every one is listed on the Colorado page.

Counties of Colorado near Larimer County in population, July 2025
County	July 2025	Change since 2020
Arapahoe County	673,820	+2.8%
Jefferson County	580,451	−0.5%
Adams County	554,668	+6.6%
Douglas County	399,396	+10.8%
Weld County	378,426	+14.2%
Larimer County	377,292	+4.8%
Boulder County	328,560	−0.7%
Pueblo County	169,277	+0.6%
Mesa County	162,845	+4.4%
Broomfield County	79,174	+6.3%
Garfield County	63,474	+2.7%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026