Cosmopolis Post Office Hours

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Retail Hours

Contact Numbers:

Phone: 360-533-3305
Monday-Friday 8:00am - 5:00pm
Saturday-Sunday Closed

Bulk Mail Acceptance Hours

Monday-Friday 10:30am - 3:30pm
Saturday-Sunday Closed

Monday-Friday 8:00am - 5:00pm
Saturday-Sunday Closed

Lobby Hours

Monday-Sunday 12:01am - 11:59pm

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David M Ambrose (Postmaster)
114 F St
Cosmopolis, WA 98537

The Cosmopolis Post Office is located in the state of Washington within Grays Harbor County. This location serves 2,129 Cosmopolis residents with a median income of $50,742. It's estimated that approximately 3,398 packages pass through this post office each year.

Cosmopolis Post Office Location

Cosmopolis Washington Local Links