How to call Guam from Select country: Abkhazia Afghanistan Aland Islands Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Ascension Island Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Brazil British Indian Ocean Territory Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Canary Islands Cape Verde Cayman Islands Central African Republic Ceuta Chad Chile China Christmas Island Cocos - Keeling Island Colombia Comoros Congo, DR Congo-Brazzaville Cook Islands Costa Rica Côte d'Ivoire Croatia Cuba Curaçao Cyprus Cyprus, Northern Czech Republic Denmark Diego Garcia Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia European Union Falkland Islands Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern and Antarctic Lands Gabon Gambia Georgia Germany Ghana Gibraltar Global Mobile Satellite System Greece Greenland Grenada Guadeloupe Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Honduras Hong Kong Hungary Iceland India Indonesia International Freephone Service International National Rate Service International Networks International Premium Rate Service International Public Correspondence Service International Satellite Service International Shared Cost Service Iran Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Korea, North Korea, South Kosovo Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macau Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Melilla Mexico Micronesia Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Nagorno-Karabakh Namibia Nauru Nepal Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Northern Mariana Islands Norway Oman Pakistan Palau Palestine Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Islands Poland Portugal Puerto Rico Qatar Réunion Romania Russia Rwanda Saint Helena Saint Kitts and Nevis Saint Lucia Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino São Tomé and Príncipe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten Slovakia Slovenia Solomon Islands Somalia Somaliland South Africa South Ossetia Spain Sri Lanka Sudan Suriname Svalbard and Jan Mayen Swaziland Sweden Switzerland Syria Taiwan Tajikistan Tanzania Thailand Timor-Leste Togo Tokelau Tonga Transnistria Trinidad and Tobago Tristan da Cunha Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom United Nations United States United States Minor Outlying Islands Universal Personal Telecommunication Service Uruguay Uzbekistan Vanuatu Vatican City Venezuela Vietnam Virgin Islands, British Virgin Islands, U.S. Wallis and Futuna Islands Western Sahara Yemen Zambia Zimbabwe :

+ 1 + City Code + Local Number

Guam City Codes

City Name	City Code(s)
Agana	671
Guam	671