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The 2000 Census showed that Larimer County had a population of 251,494 people. This represented 5.85% of the total population of Colorado, making it the state's 7th most populous county (out of 64 counties).

From the Census Estimates for 2009<1>, Larimer had a population of 298,382 people. This is an increase of 18.64% since the 2000 Census.

The following table shows the recent changes in population. Other than 2000, the population counts have been estimated by the Census Bureau.

Since 2000
Year-to-Year Change
2010299,630+19.14%+0.42% since 2009
2009298,382+18.64%+1.88% since 2008
2008292,889+16.46%+2.08% since 2007
2007286,927+14.09%+2.03% since 2006
2006281,215+11.82%+2.08% since 2005
2005275,477+9.54%+1.34% since 2004
2004271,830+8.09%+1.18% since 2003
2003268,671+6.83%+1.13% since 2002
2002265,659+5.63%+1.88% since 2001
2001260,746+3.68%+3.68% since 2000
2000251,494The Last Census

Larimer County had 105,392 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Larimer County has a total area<3> of 2,633 square miles [6,821 km²]. Of this total, 2,601 square miles [6,737 km²] of the area is land, with the balance (1.24%) being water (32.56 square miles [84.3 km²]).

Using the above population and land area values, Larimer County had a population density of 96.7 people per square mile [37.33 people/km²], making it the state's 8th most densely populated county (out of 64 counties).

US Census QuickFacts

The Census Bureau has created documents containing demographic information that are called QuickFacts. A QuickFact that is specific to Larimer County is available. The QuickFact also contains a comparison between Larimer and the state of Colorado.

Click here for the Larimer County QuickFact (QF-08069).

Below are some of the communities that are located in Larimer County:

(2009 Est)
(2000 Census)
Change in
Fort CollinsQF-0827425138,733118,65216.92%
Estes ParkQF-08251156,5435,41320.88%

Below are the counties that adjoin and form the boundaries of Larimer County. A link to their specific Census QuickFact has been provided.

(2009 Est.)
(2000 Census)
Change in
BoulderQF-08013   S303,482291,2884.19%
GrandQF-08049   SW13,91112,44211.81%
JacksonQF-08057   W1,3691,577-13.19%
WeldQF-08123   SE254,759180,93640.8%
Albany (WY)QF-56001   NW33,97932,0146.14%
Laramie (WY)QF-56021   NE88,85481,6078.88%

Other Roadside Stops ...

About Colorado

Cities, Towns and Villages of Colorado

Off-the-Road Links ...

U.S. Census Bureau
Census QuickFact for Larimer County

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2000 Census and the next count will be for the 2010 Census.

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<2>A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).

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<3>The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Larimer. The value given by the Census Bureau reflects their statistical (or sampling) requirements.

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<4>All Quarter-dollar coin images from the United States Mint.

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