Home Post Office Photos Seward, Alaska Post Office 99664 Post Office Photos Seward, Alaska Post Office 99664 August 7, 2019 218 0 Share on Facebook Tweet on Twitter The Seward, Alaska Post Office serves ZIP Code 99664. Photo by Jimmy Emerson, some rights reserved. Photo shared under the Creative Commons License. Seward Post Office 507 Madison St Seward, AK 99664 RELATED ARTICLESMORE FROM AUTHOR Post Office Photos St. Onge, South Dakota Post Office Post Office Photos Moville, Iowa Post Office Post Office Photos Leiter, Wyoming Post Office 82837