The current Pool existing since the creation of the Republic of the Congo on 28 November 1958 has been amended several times. So far it is limited to the north by the Department of Plateaux in the east by the Congo River, south and west by the Departments of Bouenza and Lékoumou. It is divided into 13 districts: Boko, Igné, Kimba, Kindamba, Kinkala, Louingui, Loumo, Mayama, Mbandza-Ndounga, Mindouli, Ngaba, Ngoma Tsé-Tsé and Vinza.

Actually, It is inhabited on the one hand, by the Tékés people, the "Ngantsiés" ie indigenous, former earth holders, the true "Masters" of the soil, and, on the other hand, by the Badondos the Bahangalas the Bakambas, the Bakongo-Boko, the Balaris the Bassoundis, Minkengués all from Kongo people descent, and Babis (Pygmies) who live in Mpangala land (in memory and in memory of Mpangala, suburb of Kongo dia Ntotila, the land of Mabombolo ma Mpangala).
.