There are 333 United States Postal Service collection boxes and post offices available to the public in Seattle, WA. You can use any one of these locations to mail your letter or small package via USPS.
Post Offices and Mailboxes in Washington
Where to buy postage stamps in Seattle, WA
Now you can print postage immediately using your home printer. Avoid trips to the Post Office. Print USPS postage online with Stamps.com. Get a 4 week trial if you Start Now.