Percentages of the Costa Rican population by race are known as the national census does have the question of ethnicity included in its form. As for 2012 65.80% of Costa Ricans identify themselves as white/castizo and 13.65% as mestizo, giving around 80% of Caucasian population. This, however, is based in self-identification and not in scientific studies. According to PLoS "Genetics Geographic Patterns of Genome Admixture in Latin American Mestizos" study of 2012, Costa Ricans have 68% of European ancestry, 29% Amerindian and 3% African. According to CIA Factbook, Costa Rica has white or mestizo population of the 83.6%.