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The Commemorative
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The Commemorative Quarter for Montana

The 2000 Census showed that Lake County had a population of 26,507 people. This represented 2.94% of the total population of Montana, making it the state's 9th most populous county (out of 56 counties).

From the Census Estimates for 2009<1>, Lake had a population of 28,605 people. This is an increase of 7.91% 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
201028,746+8.45%+0.49% since 2009
200928,605+7.91%+0.82% since 2008
200828,373+7.04%+0.96% since 2007
200728,103+6.02%-0.25% since 2006
200628,173+6.29%+0.83% since 2005
200527,941+5.41%+1.29% since 2004
200427,586+4.07%+1.82% since 2003
200327,094+2.21%+1% since 2002
200126,839+1.25%+1.25% since 2000
200026,507The Last Census

Lake County had 13,605 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Lake County has a total area<3> of 1,653 square miles [4,283 km²]. Of this total, 1,493 square miles [3,868 km²] of the area is land, with the balance (9.67%) being water (159.9 square miles [414.3 km²]).

Using the above population and land area values, Lake County had a population density of 17.75 people per square mile [6.85 people/km²], making it the state's 6th 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 Lake County is available. The QuickFact also contains a comparison between Lake and the state of Montana.

Click here for the Lake County QuickFact (QF-30047).

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

(2009 Est)
(2000 Census)
Change in

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

(2009 Est.)
(2000 Census)
Change in
FlatheadQF-30029   N89,62474,47120.35%
MissoulaQF-30063   S108,62395,80213.38%
SandersQF-30089   W11,09610,2278.5%

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U.S. Census Bureau
Census QuickFact for Lake 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 Lake. 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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