Time Zone: Cowlitz County lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time.
The community of Kelso is the Seat for Cowlitz County.
Cowlitz County is one of the original counties of Washington and was founded in 1854.
From the Census Estimates for 2009, <1> Cowlitz had a population of 101,966 people. This is an increase of 9.7% since the last Census (which gave a population of 92,948 people in 2000).
At the time of the 2000 Census, Cowlitz represented 1.58% of the total population of Washington, making it the state's 12th most populous county (out of 39 counties).
The following table shows the recent changes in population. Other than 2000, the population counts have been estimated by the Census Bureau.
Year | Population | Change Since 2000 | Year-to-Year Change |
2010 | 102,410 | +10.18% | +0.44% since 2009 |
2009 | 101,966 | +9.7% | +0.42% since 2008 |
2008 | 101,537 | +9.24% | +0.97% since 2007 |
2007 | 100,557 | +8.19% | |
--- | | | 2000 | 92,948 | The Last Census |
More information can be found on the Cowlitz County Census Page for Cowlitz County. .
Below are some of the communities located in Cowlitz County (for more communities, please visit our Nearby Page for Cowlitz County):
Community | 2009 Population | 2000 Population | Change (2009vs. 2000) |
Longview | 36,483 | 34,660 | 5.26% increase |
Kelso | 12,150 | 11,895 | 2.14% increase |
Woodland | 5,332 | 3,780 | 41.06% increase |
Kalama | 2,256 | 1,783 | 26.53% increase |
Castle Rock | 2,121 | 2,130 | 0.42% decrease |
Websites for Cowlitz County
If you know of a history or genealogy society whose interest includes Cowlitz 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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