Postmaster Finder
Postal History
Research Sources
Postmaster Finder
Post Offices by County
ISLAND COUNTY,
WASHINGTON
ZIP Code
Post Office
Date Established
Date Discontinued
98236
CLINTON
98239
COUPEVILLE
98249
FREELAND
98253
GREENBANK
98260
LANGLEY
06/08/1891
98277
OAK HARBOR
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