_#_Birth rate: 38 births/1,000 population (1991)
_#_Death rate: 8 deaths/1,000 population (1991)
_#_Net migration rate: 0 migrants/1,000 population (1991)
_#_Infant mortality rate: 60 deaths/1,000 live births (1991)
_#_Life expectancy at birth: 64 years male, 68 years female (1991)
_#_Total fertility rate: 5.3 children born/woman (1991)
_#_Nationality: noun—Sao Tomean(s); adjective—Sao Tomean
_#_Ethnic divisions: mestico, angolares (descendents of Angolan slaves), forros (descendents of freed slaves), servicais (contract laborers from Angola, Mozambique, and Cape Verde), tongas (children of servicais born on the islands), and Europeans (primarily Portuguese)
_#_Religion: Roman Catholic, Evangelical Protestant, Seventh-Day Adventist
_#_Language: Portuguese (official)