Cowlitz County, Washington Zip Codes

Zip Code	City	Population
98632	Longview	50,837
98626	Kelso	27,000
98674	Woodland	15,679
98611	Castle Rock	9,341
98625	Kalama	6,827
98645	Silverlake	2,044
98603	Ariel	1,192
98649	Toutle	849
98581	Ryderwood	425
98609	Carrolls	0

Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.