other: 89.71% (2001)

Irrigated land:
1,260 sq km (1998 est.)

Natural hazards:
occasional earthquakes, hurricanes along Atlantic coast; frequent
flooding of lowlands at onset of rainy season and landslides; active
volcanoes

Environment - current issues:
deforestation and land use change, largely a result of the clearing
of land for cattle ranching and agriculture; soil erosion; coastal
marine pollution; fisheries protection; solid waste management; air
pollution

Environment - international agreements:
party to: Biodiversity, Climate Change, Climate Change-Kyoto
Protocol, Desertification, Endangered Species, Environmental
Modification, Hazardous Wastes, Law of the Sea, Marine Dumping,
Ozone Layer Protection, Wetlands, Whaling
signed, but not ratified: Marine Life Conservation

Geography - note:
four volcanoes, two of them active, rise near the capital of San
Jose in the center of the country; one of the volcanoes, Irazu,
erupted destructively in 1963-65

People Costa Rica

Population:
4,016,173 (July 2005 est.)

Age structure:
0-14 years: 28.9% (male 593,540/female 566,361)
15-64 years: 65.5% (male 1,330,481/female 1,300,664)
65 years and over: 5.6% (male 104,564/female 120,563) (2005 est.)

Median age:
total: 26.03 years
male: 25.59 years
female: 26.5 years (2005 est.)

Population growth rate:
1.48% (2005 est.)

Birth rate:
18.6 births/1,000 population (2005 est.)

Death rate:
4.33 deaths/1,000 population (2005 est.)

Net migration rate:
0.5 migrant(s)/1,000 population (2005 est.)

Sex ratio:
at birth: 1.05 male(s)/female
under 15 years: 1.05 male(s)/female
15-64 years: 1.02 male(s)/female
65 years and over: 0.87 male(s)/female
total population: 1.02 male(s)/female (2005 est.)

Infant mortality rate:
total: 9.95 deaths/1,000 live births
male: 10.85 deaths/1,000 live births
female: 9 deaths/1,000 live births (2005 est.)

Life expectancy at birth:
total population: 76.84 years
male: 74.26 years
female: 79.55 years (2005 est.)

Total fertility rate:
2.28 children born/woman (2005 est.)

HIV/AIDS - adult prevalence rate:
0.6% (2003 est.)

HIV/AIDS - people living with HIV/AIDS:
12,000 (2003 est.)

HIV/AIDS - deaths:
900 (2003 est.)

Nationality:
noun: Costa Rican(s)
adjective: Costa Rican

Ethnic groups:
white (including mestizo) 94%, black 3%, Amerindian 1%, Chinese 1%,
ot