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The Commemorative
Quarter for
The Commemorative Quarter for Missouri

Time Zone: Oregon County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.

The community of Alton is the Seat for Oregon County.

Oregon County was founded in 1841 and was created by taking area from RipleyCounty.

From the Census Estimates for 2009, <1> Oregon had a population of 10,291 people. This is a decrease of 0.51% since the last Census (which gave a population of 10,344 people in 2000).

At the time of the 2000 Census, Oregon represented 0.18% of the total population of Missouri, making it the state's 86th most populous county (out of 115 counties).

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
201010,881+5.19%+5.73% since 2009
200910,291-0.51%-0.32% since 2008
200810,324-0.19%-0.19% since 2007
200010,344The Last Census

More information can be found on the Oregon County Census Page for Oregon County.


Below are some of the communities located in Oregon County (for more communities, please visit our Nearby Page for Oregon County):

Community 2009
(2009vs. 2000)
Thayer   2,1642,2011.68% decrease  
Alton   6376684.64% decrease  
Koshkonong   --205 

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

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