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

The community of Portage is the Seat for Columbia County.

Columbia County was founded in 1846 and was created by taking area from PortageCounty.

From the Census Estimates for 2009, <1> Columbia had a population of 55,170 people. This is an increase of 5.15% since the last Census (which gave a population of 52,468 people in 2000).

At the time of the 2000 Census, Columbia represented 0.98% of the total population of Wisconsin, making it the state's 26th most populous county (out of 72 counties).

The following table shows the recent changes in population. Other than 2000, the population counts have been estimated by the Census Bureau.

YearPopulationChange
Since 2000
Year-to-Year Change
201056,833+8.32%+3.01% since 2009
200955,170+5.15% 
200855,139+5.09%+0.14% since 2007
200755,064+4.95% 
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200052,468The Last Census

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

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

Community 2009
Population
2000
Population
Change
(2009vs. 2000)
Portage   9,8039,7280.77% increase  
Columbus   4,9214,4799.87% increase  
Lodi   3,0692,7919.96% increase  
Lodi   2,9062,8820.83% increase  
Pacific   2,7132,5187.74% increase  

Websites for Columbia County

Official Website:   www.co.columbia.wi.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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