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The Commemorative
Quarter for
The Commemorative Quarter for Oregon

Time Zone: Columbia County lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time.

The community of Saint Helens is the Seat for Columbia County.

Columbia County was founded in 1854 and was created by taking area from WashingtonCounty.

From the Census Estimates for 2009, <1> Columbia had a population of 49,592 people. This is an increase of 13.85% since the last Census (which gave a population of 43,560 people in 2000).

At the time of the 2000 Census, Columbia represented 1.27% of the total population of Oregon, making it the state's 18th most populous county (out of 36 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
201049,351+13.29%-0.49% since 2009
200949,592+13.85%+0.51% since 2008
200849,339+13.27%+0.87% since 2007
200043,560The Last Census

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


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

Community 2009
(2009vs. 2000)
Saint Helens   12,56210,01925.38% increase  
Scappoose   6,3924,97628.46% increase  
Vernonia   2,3112,2283.73% increase  
Columbia City   1,9661,57125.14% increase  
Rainier   1,8041,6876.94% increase  

Websites for Columbia County

Official Website:   www.co.columbia.or.us/

If you know of a history or genealogy society whose interest includes Columbia County, would you please send us the URL for their website? We would like to add their link to our Gazetteer. To contact us, please visit our Feedback Page.

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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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