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Post Offices by County

COWLITZ COUNTY, WASHINGTON

ZIP Code Post Office Date Established Date Discontinued
98603 ARIEL 01/07/1899
98609 CARROLLS
98611 CASTLE ROCK
98616 COUGAR 08/03/1898
COUGAR 05/21/1902 08/15/1936
98625 KALAMA
98626 KELSO
98632 LONGVIEW
98581 RYDERWOOD
98645 SILVERLAKE 07/01/1985
98649 TOUTLE
98674 WOODLAND

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