Cosmopolis 98537 mailboxes and post offices

There are 4 United States Postal Service post boxes and offices available to the public in Cosmopolis, WA 98537. You can use any one of these locations to mail your letter or small package via USPS. For additional collection boxes in neighboring communities, see the list of post boxes in Washington.

Public Collection Box
1219 S Boone St
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Public Collection Box
220 N Boone St
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Public Collection Box
1137 E Wishkah St
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