Population: 4,203,200 (July 2009 est.)
Age structure: 0-14 years: 20.9% (male 454,571/female 424,022) 15-64 years: 67.1% (male 1,411,336/female 1,409,760) 65 years and over: 12% (male 224,850/female 278,661) (2009 est.)
Median age: total: 35 years male: 34.2 years female: 35.7 years (2009 est.)
Population growth rate: 1.12% (2009 est.)
Death rate: 7.77 deaths/1,000 population (2008 est.)
Net migration rate: 4.71 migrant(s)/1,000 population (2009 est.)
Sex ratio: at birth: 1.07 male(s)/female under 15 years: 1.07 male(s)/female 15-64 years: 1 male(s)/female 65 years and over: 0.81 male(s)/female total population: 0.99 male(s)/female (2009 est.)
Infant mortality rate: total: 5.05 deaths/1,000 live births male: 5.53 deaths/1,000 live births female: 4.54 deaths/1,000 live births (2009 est.)
Life expectancy at birth: total population: 78.24 years male: 75.6 years female: 81.06 years (2009 est.)
Total fertility rate: 1.85 children born/woman (2009 est.)
HIV/AIDS - adult prevalence rate: 0.2% (2007 est.)
HIV/AIDS - people living with HIV/AIDS: 5,500 (2007 est.)
HIV/AIDS - deaths: fewer than 100 (2007 est.)
Nationality: noun: Irishman(men), Irishwoman(women), Irish (collective plural) adjective: Irish
Ethnic groups: Irish 87.4%, other white 7.5%, Asian 1.3%, black 1.1%, mixed 1.1%, unspecified 1.6% (2006 census)
Religions: Roman Catholic 87.4%, Church of Ireland 2.9%, other Christian 1.9%, other 2.1%, unspecified 1.5%, none 4.2% (2006 census)
Languages: English (official) is the language generally used, Irish (Gaelic or Gaeilge) (official) spoken mainly in areas along the western coast
Literacy: definition: age 15 and over can read and write total population: 99% male: 99% female: 99% (2003 est.)