Seatac mailboxes and post offices

There are 9 United States Postal Service post boxes and offices available to the public in Seatac, WA. 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
17801 International Blvd
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Public Collection Box
15868 1 St Ave S
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Public Collection Box
1200 S 192 Nd St
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Public Collection Box
19247 Des Moines Memorial Dr
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Public Collection Box
17833 1 St Ave S
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Mailbox in Post Office Lobby
15250 32 Nd Ave S
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Public Collection Box
3725 S 144 Th St
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Public Collection Box
4011 S 164 Th St
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