Guam Area Codes

Area Code 671
Post Office City: Agana Heights, GU
County: County
Timezone:
Coordinates: 144.74, 13.46
Area Code: 671

What is the Area Code?

In the United States, the "Area Code" is a numerical prefix used in phone numbers to identify a specific geographic region within the country. These area codes are part of the telephone numbering system and are essential for the proper routing of calls.

The area code typically consists of three digits and precedes the local phone number. For example, in the phone number (212) 555-1234, "212" is the area code that corresponds to a part of New York City.

Functions of the Area Code:

Geographic Identification: Allows the determination of the region or city from which a call originates. Call Routing: Helps telephone service providers direct calls efficiently through their network. Number Distribution: Facilitates the assignment and organization of phone numbers to avoid conflicts and duplications. Billing: Sometimes, call costs can vary depending on the area code, especially for long-distance calls. In summary, area codes are fundamental to the functioning of the telephone system in the United States, ensuring that calls are connected correctly and managed in an orderly manner.

Area Codes for Guam

Area Codes, cities and counties within Guam Area Code

Here are the cities and towns for State Guam that the US Post Office accepts. The city listed as the main city is usually where the main post office is located. When sending a letter or package, always include your preferred city to ensure your delivery is as successful as possible

Primary CityAceptable CitiesStateCountyArea CodesZIPTimezone
Agana Heights--Guam(GU)67196919
Agat--Guam(GU)96928
BarrigadaMangilao, TamuningGuam(GU)96913
Barrigada--Guam(GU)96921
Dededo--Guam(GU)96912
HagatnaAgana Heights, Asan, Chalan Pago, Maite, Mongmong, Ordot, SinajanaGuam(GU)96910
Hagatna--Guam(GU)67196932
Inarajan--Guam(GU)96917
Mangilao--Guam(GU)96923
Merizo--Guam(GU)96916
Santa RitaInarajan, Merizo, Piti, Talofofo, Umatac, YonaGuam(GU)67196915
Tamuning--Guam(GU)96931
YigoBarrigada, DededoGuam(GU)96929

Guam have 1 Area Codes