| Information by State |
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| Washington
| Cowlitz
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| Find a Lawyer in Cowlitz County: |
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| Cowlitz County, Washington (WA) |
| Address: |
County Administration Building |
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207 4th Avenue N |
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Kelso, Washington 98626 |
| County Seat: |
Kelso |
| Phone: |
360-577-3020 |
| Fax: |
509-423-9987 |
| Website: |
www.co.cowlitz.wa.us |
| Established: |
1854 |
| Area: |
1,139 sq mi |
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| Cowlitz County, Washington Communities: |
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| Total Communities in Cowlitz County, Washington: 8 |
| Population: |
| 103,050 |
104,826 |
106,900 |
108,987 |
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| 2015 * |
2016 * |
2017 * |
2018 * |
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| 102,410 |
102,299 |
101,657 |
101,483 |
101,799 |
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| 2010 |
2011 * |
2012 * |
2013 * |
2014 * |
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| * (U.S. Census Estimate) |
| If you're aware of any incorrect or missing information, |
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Contact Us. |
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