3,400 (2007 SIL).
Sarawak, Kapit Division, upper Baram and Balui rivers, Mount Dulit area, 3 villages; Nibong branch of Lobong river, a tributary of Tinjar river.
Nibong, Bok Penan (Bok), Penan Silat, Penan Gang (Gang), Penan Lusong (Lusong), Penan Apo, Sipeng (Speng), Penan Lanying, Jelalong Penan. Not closely related to other languages.
Latin script [Latn].
Traditionalists are nomadic and seminomadic.