Clayton Post Office

4486 Railroad Ave Clayton, WA 99110
Phone: 509-276-2832

Parking: Street Parking
Post Office Lobby Hours
Monday 12:01am - 11:59pm
Tuesday 12:01am - 11:59pm
Wednesday 12:01am - 11:59pm
Thursday 12:01am - 11:59pm
Friday 12:01am - 11:59pm
Saturday 12:01am - 11:59pm
Sunday 12:01am - 11:59pm


Clayton Post Office is a United States Postal Service (USPS) facility in Clayton, WA. This post office offers a full array of services, including package delivery and first class mail.


Burial Flags
Bulk Mail Acceptance
Duck Stamps
Money Orders (Domestic)
Money Orders (Inquiry)
Pickup Hold Mail
Pickup Accountable Mail
PO Boxes
Priority Mail International®

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