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The 2000 Census showed that Flathead County had a population of 74,471 people. This represented 8.25% of the total population of Montana, making it the state's 4th most populous county (out of 56 counties).

From the Census Estimates for 2009<1>, Flathead had a population of 89,624 people. This is an increase of 20.35% 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
201090,928+22.1%+1.45% since 2009
200989,624+20.35%+0.58% since 2008
200889,104+19.65%+2.18% since 2007
200787,200+17.09%+2.8% since 2006
200684,824+13.9%+2.77% since 2005
200582,535+10.83%+2.36% since 2004
200480,635+8.28%+1.85% since 2003
200379,167+6.31%+2.44% since 2002
200277,284+3.78%+1.69% since 2001
200175,997+2.05%+2.05% since 2000
200074,471The Last Census

Flathead County had 34,773 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Flathead County has a total area<3> of 5,256 square miles [13,614 km²]. Of this total, 5,098 square miles [13,204 km²] of the area is land, with the balance (3.01%) being water (158.1 square miles [409.5 km²]).

Using the above population and land area values, Flathead County had a population density of 14.61 people per square mile [5.64 people/km²], making it the state's 9th most densely populated county (out of 56 counties).

US Census QuickFacts

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

Click here for the Flathead County QuickFact (QF-30029).

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

(2009 Est)
(2000 Census)
Change in

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

(2009 Est.)
(2000 Census)
Change in
GlacierQF-30035   E13,55013,2472.29%
LakeQF-30047   S28,60526,5077.91%
Lewis and ClarkQF-30049   SE61,94255,71611.17%
LincolnQF-30053   NW18,71718,837-0.64%
MissoulaQF-30063   S108,62395,80213.38%
PonderaQF-30073   E5,8146,424-9.5%
PowellQF-30077   SE7,0897,180-1.27%
SandersQF-30089   SW11,09610,2278.5%
TetonQF-30099   E6,0886,445-5.54%

The Canadian Province of British Columbia lies to the north.

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About Montana

Communities in Montana

Off-the-Road Links ...

U.S. Census Bureau
Census QuickFact for Flathead 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 Flathead. 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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