Larimer County Population

1870–2026

380.38K

2026 projection

5.7% since 2020 (increase)

0100K200K300K400K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Larimer County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026380,384+3,0920.82%
2025377,292+3,0920.83%
2024374,200+3,0080.81%
2023371,192+3,2200.88%
2022367,972+5,1071.41%
2021362,865+2,9230.81%
2020359,942+2,7010.76%
2019357,241+6,1961.77%
2018351,045+6,5361.90%
2017344,509+5,1151.51%

Showing 10 of 30 years.

Larimer County Demographics

36.8median age

Median age

Female37.8 yrs
Male36.1 yrs

Adults

300,029
63,764 seniors (65+) · 21% of adults236,265 other adults

Sex

Female 50% · 183,849Male 50% · 183,519

Population by age

MaleFemale85+ years, male: 2,72285+ years, female: 4,27680–84 years, male: 2,58880–84 years, female: 3,40675–79 years, male: 5,40775–79 years, female: 6,00170–74 years, male: 8,79170–74 years, female: 9,85265–69 years, male: 9,92365–69 years, female: 10,79860–64 years, male: 10,41960–64 years, female: 11,04655–59 years, male: 9,60155–59 years, female: 10,58450–54 years, male: 10,18150–54 years, female: 9,63545–49 years, male: 10,71745–49 years, female: 9,95240–44 years, male: 11,60940–44 years, female: 11,55935–39 years, male: 13,09735–39 years, female: 11,63330–34 years, male: 13,53030–34 years, female: 12,34525–29 years, male: 14,62425–29 years, female: 13,49120–24 years, male: 18,86620–24 years, female: 18,77315–19 years, male: 13,57815–19 years, female: 13,78210–14 years, male: 10,58510–14 years, female: 10,0715–9 years, male: 9,1325–9 years, female: 8,8960–4 years, male: 8,1490–4 years, female: 7,74985+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K10K10K15K15K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 3,674 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Larimer County Income

$93,765median household income

Median household income

$93,765

Half of households earn more, half earn less

Median earnings

$60,844

Typical yearly pay for a worker 25 or older.

Poverty rate

11.2%

About 1 in 9 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Larimer County Marital Status

51% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married51%51%50%
Never married35%38%33%
Divorced10%9%11%
Widowed4%2%6%
Separated<1%<1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year