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Larimer County, CO Demographics

Larimer County, CO is the 6th most populous of 64 counties in Colorado, with 359,066 residents across 2,596 square miles. That is about 138 people per square mile.

At the 2020 census

Population 359,066
Land area 2,596 sq mi
Density 138 / sq mi

Data: 2020 Census · American Community Survey 2024

How Larimer County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Larimer County, CO

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Larimer County, CO — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Larimer County, CO

Name Population Sq mi Per sq mi
Census Tract 6 8,151 0.8 10,723
Census Tract 25.08 7,999 14.2 562
Census Tract 25.05 7,983 8.8 905
Census Tract 16.05 7,775 6.0 1,299
Census Tract 16.08 7,666 6.1 1,253
Census Tract 17.14 7,436 12.1 614
Census Tract 27 7,356 5.2 1,421
Census Tract 26.02 7,054 24.0 294
Census Tract 17.10 6,888 1.8 3,878
Census Tract 18.12 6,633 29.4 226
Census Tract 17.06 6,476 1.8 3,512
Census Tract 10.09 6,372 2.7 2,393
Census Tract 13.08 6,098 10.5 582
Census Tract 5.03 6,019 0.5 12,062
Census Tract 10.03 5,961 1.2 5,087
Census Tract 18.07 5,829 1.5 3,974
Census Tract 11.07 5,786 1.0 5,742
Census Tract 16.02 5,780 1.2 4,927
Census Tract 16.03 5,753 1.2 4,651
Census Tract 11.04 5,714 1.0 5,586
Census Tract 9.01 5,676 1.1 4,995
Census Tract 20.11 5,506 5.7 962
Census Tract 17.07 5,472 1.3 4,192
Census Tract 18.13 5,436 6.0 905
Census Tract 11.06 5,312 0.8 6,369
Census Tract 18.10 5,298 1.5 3,530
Census Tract 18.08 5,146 17.4 296
Census Tract 11.09 5,121 0.8 6,288
Census Tract 20.05 5,078 1.0 5,092
Census Tract 11.10 5,042 1.0 5,027
Census Tract 17.15 5,029 7.9 638
Census Tract 17.13 4,965 21.0 236
Census Tract 25.07 4,947 33.7 147
Census Tract 13.07 4,781 3.5 1,365
Census Tract 11.12 4,713 2.5 1,871
Census Tract 13.06 4,596 3.6 1,270
Census Tract 19.02 4,591 1.2 3,857
Census Tract 16.07 4,144 1.0 4,234
Census Tract 17.08 4,109 1.5 2,707
Census Tract 17.12 4,053 5.5 740
Census Tract 20.08 4,007 1.3 3,203
Census Tract 19.01 3,890 1.7 2,322
Census Tract 13.01 3,732 19.7 189
Census Tract 20.07 3,730 1.8 2,024
Census Tract 17.11 3,655 1.5 2,419
Census Tract 18.04 3,646 1.2 3,057
Census Tract 10.04 3,615 0.7 5,088
Census Tract 23 3,593 39.0 92
Census Tract 25.06 3,592 10.3 350
Census Tract 11.13 3,545 1.0 3,520
Census Tract 16.06 3,537 1.3 2,793
Census Tract 9.02 3,528 0.7 4,713
Census Tract 1 3,200 0.7 4,493
Census Tract 28.01 3,161 10.9 289
Census Tract 13.05 3,130 1.1 2,845
Census Tract 28.04 3,096 36.1 86
Census Tract 5.05 3,094 0.5 6,302
Census Tract 10.07 3,006 1.1 2,779
Census Tract 28.05 2,970 5.4 548
Census Tract 10.10 2,961 1.1 2,665
Census Tract 5.04 2,933 0.5 5,861
Census Tract 5.06 2,911 0.5 5,902
Census Tract 13.04 2,838 1.5 1,886
Census Tract 25.03 2,836 320.4 9
Census Tract 3 2,834 2.7 1,035
Census Tract 11.11 2,729 0.9 3,147
Census Tract 2.01 2,669 0.4 7,026
Census Tract 7 2,660 0.5 5,300
Census Tract 4.02 2,658 1.0 2,698
Census Tract 2.02 2,515 0.7 3,377
Census Tract 25.04 2,501 13.5 185
Census Tract 18.11 2,499 0.9 2,647
Census Tract 20.10 2,452 9.3 263
Census Tract 11.14 2,432 3.3 733
Census Tract 26.01 2,263 29.1 78
Census Tract 19.04 2,130 176.6 12
Census Tract 4.01 1,926 0.5 3,802
Census Tract 10.08 1,871 0.6 2,955
Census Tract 19.05 1,801 84.3 21
Census Tract 16.01 1,668 2.3 739
Census Tract 24.03 1,666 832.0 2
Census Tract 8.01 1,608 0.4 3,785
Census Tract 24.04 1,454 108.0 13
Census Tract 24.01 1,394 398.9 3
Census Tract 8.02 1,264 0.4 3,142
Census Tract 28.03 122 220.4 1

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Metro areas containing Larimer County

About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

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