Post Offices

Post Offices in & near Castle Rock, Washington. Operating hours, locations, phone/fax number, services information.

Castle Rock Post Office

Post Office in Castle Rock, Washington on Cowlitz St W. Operating hours, phone number, services information, and other locations.

Address: 126 Cowlitz St W, Castle Rock, WA 98611
Phone: 360-274-5209
Fax: 360-274-3495
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 8:30am - 5:00pm
Tuesday 8:30am - 5:00pm
Wednesday 8:30am - 5:00pm
Thursday 8:30am - 5:00pm
Friday 8:30am - 5:00pm
Saturday 11:00am - 1:00pm
Sunday Closed

Lobby Hours

Monday 4:45pm
Tuesday 4:45pm
Wednesday 4:45pm
Thursday 4:45pm
Friday 4:45pm
Saturday 3:45pm
Sunday Closed

Last Collection Times

Monday 10:00am - 12:30pm, 1:30pm - 4:00pm
Tuesday 10:00am - 12:30pm, 1:30pm - 4:00pm
Wednesday 10:00am - 12:30pm, 1:30pm - 4:00pm
Thursday 10:00am - 12:30pm, 1:30pm - 4:00pm
Friday 10:00am - 12:30pm, 1:30pm - 4:00pm
Saturday Closed
Sunday Closed