Country Full Name: Guam. Status: US overseas territory.
Location: Guam (Territory of the USA) is an island in the North Pacific Ocean, about three-quarters of the way from Hawaii to the Philippines.
Country Climate: Tropical marine; generally warm and humid, moderated by northeast trade winds; dry season (January to June), rainy season (July to December); little seasonal temperature variation.
Country Terrain: Volcanic origin, surrounded by coral reefs; relatively flat coralline limestone plateau (source of most fresh water), with steep coastal cliffs and narrow coastal plains in north, low hills in center, mountains in south.
Major Languages: English, Chamorro (both official).
Major Religions: Christianity.
Country Population: 0.177 million (2008 est.) 0.178 million (2009 est.).
Country Economy: The economy of Guam is supported by its principal industry, tourism, which is primarily composed of visitors from Japan. Guam?s second-largest source of income is the United States military.
Currency: United States Dollar (USD).
Country Inflation: 2.5% (2005)est.).
City: Hagatna is the capital of the American island territory of Guam.
City Economy: Hagatna is one of the island’s major commercial districts in addition to being the seat of government.
Cost of Living: Hagatna has an overall cost of living index which equates it with middle cost of living locations. The overall cost of living index is comprised of the prices for defined quantities of the same goods and services across all 13 Basket Groups. Hagatna is currently ranked 154 overall, most expensive place in the world for expatriates to live, out of 282 international locations.
For more information on Guam, Hagatna
Expatriate International Cost of Living 
The main problem with living on Guam is the military’s control over the housing market. Even the most junior service members get nearly $2,000 per month rent. Nobody in the right mind would pay that out of their own pocket.