Countries
Key facts
- Capital
- Hagåtña
- Region
- Oceania, Micronesia
- Population
- 168,999 (2025)
- Area
- 549 km²
- Currency
- United States dollar (USD)
- Languages
- English, Chamorro
- Calling code
- +1-671
- Internet domain
- .gu
- ISO codes
- GU, GUM, 316
- Time zone
- UTC+10:00
- United Nations
- Not a member
- Postal code pattern
- 969## (# = digit, @ = letter)
Land and position
Guam covers about 549 square kilometres. By area it ranks 200th among the 250 countries and territories on this site. It is a little smaller than Isle of Man and a little larger than Northern Mariana Islands. It has no land border with any other country. Its centre lies at about 13° north, 145° east, in the northern hemisphere.
People
About 168,999 people live in Guam (World Bank, 2025). That makes it the 191st most populous of the 246 places on this site with a figure. On average there are 308 people to each square kilometre. About 94 percent of people live in towns and cities (World Bank, 2025). A baby born there can expect to live about 77 years (World Bank, 2024). Languages listed for it: English, Chamorro. A person from Guam is called Guamanian.
Money and economy
The currency is the United States dollar (code USD, symbol $). It is also the main currency of American Samoa, British Indian Ocean Territory, British Virgin Islands, Caribbean Netherlands, Ecuador, El Salvador, Marshall Islands, Northern Mariana Islands and 7 more. The World Bank puts the size of its economy (GDP) at about US$ 6.91 billion (2022), which is about US$ 41,833 for each person (2022).
Time
Guam uses one time zone, UTC+10:00 (Pacific/Guam). Clocks stay the same all year: there is no daylight saving time.
Time now: loading
Offsets are for January 2026. See Time Zones for a converter.
Largest cities
| City | People |
|---|---|
| Dededo Village | 44,943 |
| Yigo Village | 20,539 |
| Tamuning-Tumon-Harmon Village | 19,685 |
| Mangilao Village | 15,191 |
| Hagåtña | 1,051 |
City figures are from GeoNames and count the city itself, not the wider urban area. They can be some years old, so use them to see the order of size.
More in Micronesia
Kiribati, Marshall Islands, Micronesia, Nauru, Northern Mariana Islands, Palau. See the whole region.
Figures were collected on 11 November 2026 from the World Bank, GeoNames and the open countries data set. See About and data sources. Borders and names follow those sources and do not express any view on disputed territory.