The Kikongo-speaking Bakongo made up an estimated 15 percent of the Angolan population. In 1988 the Bakongo were the third largest ethnolinguistic group in Angola. Concentrated in Uíge, Zaire, and Cabinda provinces, where they constituted a majority of the population, the Bakongo spilled over into the nation of Zaire (where they were the largest single ethnic group) and Congo. Although the Angolan city of São Salvador (renamed Mbanza Congo) was the capital of their ancient kingdom, most of the Bakongo were situated in Zaire.