Guam Country info Continent - Oceania Guam capital - Hagåtña Guam ISO code - GU Guam ISO3 code - GUM Guam dialing prefix - +1-671 Next States Agana Heights Agat Asan Barrigada Chalan Pago-Ordot Dededo Hagatna Inarajan Mangilao Merizo Mongmong-Toto-Maite Piti Santa Rita Sinajana Talofofo Tamuning Umatac Yigo Yona See Also: set alarm to 9 set a timer 14 minutes what are the spin wheel called that decideword and space counterd20 dice bagreal clock time with secondshow many working business days until the December 30, 2030