er: 0 sq km
land: 549 sq km

Area - comparative:
three times the size of Washington, DC

Land boundaries:
0 km

Coastline:
125.5 km

Maritime claims:
territorial sea: 12 nm
exclusive economic zone: 200 nm

Climate:
tropical marine; generally warm and humid, moderated by northeast
trade winds; dry season from January to June, rainy season from July
to December; little seasonal temperature variation

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

Elevation extremes:
lowest point: Pacific Ocean 0 m
highest point: Mount Lamlam 406 m

Natural resources:
fishing (largely undeveloped), tourism (especially from Japan)

Land use:
arable land: 9.09%
permanent crops: 16.36%
other: 74.55% (2001)

Irrigated land:
NA sq km

Natural hazards:
frequent squalls during rainy season; relatively rare, but
potentially very destructive typhoons (June - December)

Environment - current issues:
extirpation of native bird population by the rapid proliferation of
the brown tree snake, an exotic, invasive species

Geography - note:
largest and southernmost island in the Mariana Islands archipelago;
strategic location in western North Pacific Ocean

People Guam

Population:
166,090 (July 2004 est.)

Age structure:
0-14 years: 29.8% (male 25,577; female 23,850)
15-64 years: 64% (male 54,220; female 52,026)
65 years and over: 6.3% (male 4,912; female 5,505) (2004 est.)

Median age:
total: 28.2 years
male: 28 years
female: 28.4 years (2004 est.)

Population growth rate:
1.5% (2004 est.)

Birth rate:
19.31 births/1,000 population (2004 est.)

Death rate:
4.35 deaths/1,000 population (2004 est.)

Net migration rate:
0 migrant(s)/1,000 population (2004 est.)

Sex ratio:
at birth: 1.06 male(s)/female
under 15 years: 1.07 male(s)/female
15-64 years: 1.04 male(s)/female
65 years and over: 0.89 male(s)/female
total population: 1.04 male(s)/female (2004 est.)

Infant mortality rate:
total: 7.15 deaths/1,000 live births
female: 6.46 deaths/1,000 live births (2004 est.)
male: 7.8 deaths/1,000 live births

Life expectancy at birth:
total population: 78.12 years
male: 75.08 years
female: 81.34 years (2004 est.)

Total fertility