ZIP Codes Box

Cowlitz County, Washington ZIP codes

11ZIP codes
11Cities and towns
117,032People in ZIP areas
360, 503, 564Area codes

Cowlitz County is in Washington and the Pacific Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.

All ZIP codes in Cowlitz County

ZIP codeCityTypePopulationMedian income
98581RyderwoodStandard419$43,009
98603ArielStandard1,267$78,281
98609CarrollsStandard––
98611Castle RockStandard9,302$86,322
98616CougarStandard192–
98625KalamaStandard7,655$116,435
98626KelsoStandard26,892$75,528
98632LongviewStandard50,635$66,305
98645SilverlakeStandard2,216$101,429
98649ToutleStandard929$73,750
98674WoodlandStandard17,525$94,245

Cities and towns in Cowlitz County

Area codes in Cowlitz County

Questions

How many ZIP codes are in Cowlitz County, WA?
Cowlitz County has 11 ZIP codes.
What cities are in Cowlitz County?
Cowlitz County ZIP codes cover Ariel, Carrolls, Castle Rock, Cougar, Kalama, Kelso, Longview and Ryderwood and 3 other places.
What area code is Cowlitz County, WA?
Cowlitz County uses area codes 360, 503, 564 and 971.
What time zone is Cowlitz County in?
Cowlitz County is in Pacific Time.

Other Washington counties