Postcodes
Guam - postcodes
Use the US format: locality, GU and the published five-digit ZIP or ZIP+4. Do not substitute a mailing-office ZIP for the physical location.
Published address and location examples from the cited sources; these do not establish postcode boundaries or postal deliverability.
Address guides and official destinations
How should I write the postcode?
Use the US format: locality, GU and the published five-digit ZIP or ZIP+4. Do not substitute a mailing-office ZIP for the physical location.
What order should the components appear in?
Name → Street / premises → Locality, GU ZIP → Country
Quick facts
Use the US format: locality, GU and the published five-digit ZIP or ZIP+4. Do not substitute a mailing-office ZIP for the physical location.
Featured Postcodes & Examples
96910
Hagåtña, GU
Guam Museum; Dulce Nombre de Maria Cathedral-Basilica
96923
Mangilao, GU
University of Guam — main campus
96915-5524
Piti, GU
Fish Eye Marine Park — visitor centre
96915
Talo’fo’fo, GU
Valley of the Latte — river valley entrance
96929
Yigo, GU
Guam National Wildlife Refuge — Ritidian unit
96915
Sumai, GU
T. Stell Newman Visitor Center