- Ethnic groups. Quechua Indians constitute almost half of Peru's population;mestizos slightly less than one-third; and people of European ancestry, about one-eighth. There are also small minority populations of Aymara Indians, Japanese, and others.
- language. Spanish
- Religion; The predominant religion is Roman Catholic, but there is a scattering of other Christian faiths. Indigenous Peruvians, however, have blended Catholicism and their traditional beliefs.