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The Commemorative
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The Commemorative Quarter for Wyoming

The 2000 Census showed that Sheridan County had a population of 26,560 people. This represented 5.38% of the total population of Wyoming, making it the state's 7th most populous county (out of 23 counties).

From the Census Estimates for 2009<1>, Sheridan had a population of 29,163 people. This is an increase of 9.8% 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
201029,116+9.62%-0.16% since 2009
200929,163+9.8%+1.96% since 2008
200828,601+7.68%+2.34% since 2007
200727,947+5.22%+1.71% since 2006
200627,476+3.45%+1.31% since 2005
200527,121+2.11%+0.5% since 2004
200326,962+1.51%+0.34% since 2002
200226,871+1.17%+0.84% since 2001
200126,646+0.32%+0.32% since 2000
200026,560The Last Census

Sheridan County had 12,577 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Sheridan County has a total area<3> of 2,527 square miles [6,545 km²]. Of this total, only a minor amount of that area is covered by water (3.75 square miles [9.71 km²]).

Using the above population and land area values, Sheridan County had a population density of 10.53 people per square mile [4.06 people/km²], making it the state's 3rd most densely populated county (out of 23 counties).

US Census QuickFacts

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

Click here for the Sheridan County QuickFact (QF-56033).

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

(2009 Est)
(2000 Census)
Change in

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

(2009 Est.)
(2000 Census)
Change in
Big Horn (MT)QF-30003   NW13,01512,6712.71%
Powder River (MT)QF-30075   NE1,6641,858-10.44%
Big HornQF-56003   W11,58111,4611.05%
CampbellQF-56005   SE43,96733,69830.47%
JohnsonQF-56019   S8,5317,07520.58%

Other Roadside Stops ...

About Wyoming

The Communities of Wyoming

Off-the-Road Links ...

U.S. Census Bureau
Census QuickFact for Sheridan 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 Sheridan. 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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