Learn About
The Commemorative
Quarter for
The Commemorative Quarter for Montana

The 2000 Census showed that Stillwater County had a population of 8,195 people. This represented 0.91% of the total population of Montana, making it the state's 26th most populous county (out of 56 counties).

From the Census Estimates for 2009<1>, Stillwater had a population of 8,786 people. This is an increase of 7.21% 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
20109,117+11.25%+3.77% since 2009
20098,786+7.21%+1.13% since 2008
20088,688+6.02%+0.67% since 2007
20078,630+5.31%+2.07% since 2006
20068,455+3.17%+1.78% since 2005
20058,307+1.37%+0.18% since 2004
20048,292+1.18%-0.5% since 2003
20038,334+1.7%-0.24% since 2002
20028,354+1.94%+0.24% since 2001
20018,334+1.7%+1.7% since 2000
20008,195The Last Census

Stillwater County had 3,947 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Stillwater County has a total area<3> of 1,804 square miles [4,673 km²]. Of this total, only a minor amount of that area is covered by water (9.52 square miles [24.66 km²]).

Using the above population and land area values, Stillwater County had a population density of 4.57 people per square mile [1.76 people/km²], making it the state's 15th 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 Stillwater County is available. The QuickFact also contains a comparison between Stillwater and the state of Montana.

Click here for the Stillwater County QuickFact (QF-30095).

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

(2009 Est.)
(2000 Census)
Change in
CarbonQF-30009   SE9,7569,5522.14%
Golden ValleyQF-30037   N1,0571,0421.44%
ParkQF-30067   W15,94115,6941.57%
Sweet GrassQF-30097   NW3,6673,6091.61%
YellowstoneQF-30111   E144,797129,35211.94%

Other Roadside Stops ...

About Montana

Search for a Community in Montana

Off-the-Road Links ...

U.S. Census Bureau
Census QuickFact for Stillwater 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.

- Return to Citation

<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).

- Return to Citation

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

- Return to Citation

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

- Return to Citation