| Population | 173,456 (July 2007 est.) |
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| Age structure | 0-14 years: 28.6% (male 25,686/female 23,938) 15-64 years: 64.5% (male 57,023/female 54,872) 65 years and over: 6.9% (male 5,592/female 6,345) (2007 est.) |
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| Median age | total: 28.8 years male: 28.5 years female: 29 years (2007 est.) |
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| Population growth rate | 1.4% (2007 est.) |
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| Birth rate | 18.56 births/1,000 population (2007 est.) |
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| Death rate | 4.56 deaths/1,000 population (2007 est.) |
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| Net migration rate | 0 migrant(s)/1,000 population (2007 est.) |
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| Sex ratio | at birth: 1.06 male(s)/female under 15 years: 1.073 male(s)/female 15-64 years: 1.039 male(s)/female 65 years and over: 0.881 male(s)/female total population: 1.037 male(s)/female (2007 est.) |
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| Infant mortality rate | total: 6.68 deaths/1,000 live births male: 7.35 deaths/1,000 live births female: 5.97 deaths/1,000 live births (2007 est.) |
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| Life expectancy at birth | total population: 78.76 years male: 75.69 years female: 82.01 years (2007 est.) |
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| Total fertility rate | 2.57 children born/woman (2007 est.) |
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People living with HIV/AIDS | NA |
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| HIV/AIDS - deaths | NA |
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| Nationality | noun: Guamanian(s) (US citizens) adjective: Guamanian |
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| Ethnic groups | Chamorro 37.1%, Filipino 26.3%, other Pacific islander 11.3%, white 6.9%, other Asian 6.3%, other ethnic origin or race 2.3%, mixed 9.8% (2000 census) |
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| Religions | Roman Catholic 85%, other 15% (1999 est.) |
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| Languages | English 38.3%, Chamorro 22.2%, Philippine languages 22.2%, other Pacific island languages 6.8%, Asian languages 7%, other languages 3.5% (2000 census) |
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| Literacy | definition: age 15 and over can read and write total population: 99% male: 99% female: 99% (1990 est.) |
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