9,000 (2000 census). 5,500 Somba, 4,500 Siawari. 1,000 monolinguals. Ethnic population: 11,000.
Morobe Province, Finschhafen district, Central Huon peninsula, south of Cromwell Range, Burum river valley and west slopes of Kuat river. 30 villages. 1,000 in Lae, scattered in Port Moresby.
Siawari, Somba. Lexical similarity: 92% with dialects.
Latin script [Latn].
‘Bulum’ is the Kâte [kmg] name for the Burum area. Christian, traditional religion.