The population of Jamaica consists mostly of descendants of African blacks, plus several small East Indian, Chinese, and European minorities. The official language is English, but most of the rural population speaks a Creole dialect. Population is concentrated on the coastal plains; the highlands are mostly uninhabited. A high birthrate and low death rate have resulted in high population densities in recent years. Church of God, Baptists, and Anglicans are the largest religious groups. Approximately 5% of the population are Roman Catholics. The rastafarians are the most visible of numerous Afro-Caribbean syncretic religious groups. The administrative center for the University of the West Indies (1948) is near Kingston. The Institute of Jamaica (1879), in Kingston, has a library and museum of Jamaican history, art, and natural history.