The population of Benin is 99% African. However, although several of the larger groups in southern Benin are culturally and socially closely related, Benin is not ethnically or linguistically homogeneous, and there is a particularly marked division between the peoples of the south and those of the north. The largest ethnic group is that of the Fon or Dahomeyans (about 25%), the closely related Adja (about 6%), and the Aizo (about 5%), who live in the south of the country and are predominantly farmers. The Goun (about 11%), who are related to the Adja, are concentrated around Porto-Novo. The Bariba (about 12%) are the dominant people in northern Benin. The Yoruba (more than 12%), essentially a farming people, came from Nigeria and are settled along the eastern boundary of the country. In the northeast, the Somba (more than 4%) subdivide into a number of distinct groups. The Fulani (about 6%), traditionally nomadic herders, gradually are becoming sedentary. Other groups include the Holli, the Dendi, and the Pilapila (or Yowa). The remaining 1% of the population is largely European, numbering about 5,500 in 1998.