As of 2000, population of the Nanumba in Ghana were estimated at 78,812. Though Nanumba constitute a homogeneous cultural and linguistic group, they are closely related to the Dagomba to the north and east and the Mamprusi further to the north, and more-remotely to the Mossi of Burkina Faso. Traditionally the originating ancestors of the paramount chiefly lines of the former three brothers, and the Mossi paramounts descended from a daughter of the Mamprusi line. Published references include quoted statements of Mampruli speakers: Ti ŋmampurisi, Yooba, Naanumma ni Moosi piiligu nyɛ la Kyama maa "The origin of us Mamprusi, Dagomba and Nanumba was in Chama", Ti zaa nyɛ la yimmu "We are all one. " and discussion in The capital town of the Nanumba is Bimbilla, a small town which serves as the capital of Nanumba North district in the Northern Region of north Ghana. It is also the capital of the Nanumba State and the seat of the Overlord of Nanumba, the Bimbilla Naa.
Traditional authority
The highest level in the traditional hierarchy, referred to in English as the 'Paramount Chief' or sometimes 'King', is the last court of appeal for all disputes at lower levels: between paramounts there was no recourse other than war. The subjects of a Paramount Chief constitute an ethnic group or 'tribe'. In this system the Bimbilla Naa with his seat at Bimbilla is the Paramount Chief of the Nanumba ethnic group. Traditionally, the paramount chief of Mampurugu installed paramount chiefs directly from Mampurugu in the 'younger brother' and 'granddaughter' states, but for many centuries the NaYiri's recognition of the new paramounts has been symbolic at best and its significance disputed. The Nanumba have a particularly close relationship with the Dagomba, but the larger group have rarely exercised direct power over them. In modern Ghana there is a House of Chiefs where traditional matters have a forum at the level of the nation state.
Religion
Islam is the most-practised and characteristic religion of the Nanumba and the Dagomba, the Nanumba less-so than the Dagomba, though many people also consult non-Muslim diviners and give offerings to ancestral and other shrines. There are a few Christians, mostly Roman Catholics.