Today part of Lulonga is in the current province of Équateur, and part in the province of Tshuapa.

Lulonga District was created on 28 March 1912 when an arrêté royal divided the Congo into 22 districts.

A map of the colony in 1912 shows Lulonga bordering the smaller Équateur District to the south, Bangala District to the west and north, and Aruwimi District to the east.

[3] As of 1926 the province included the districts of Ubangi, Bangala, Lulonga, Équateur and Lac Léopold II.

[3] On 11 July 2015 Équateur Province was divided into the current much smaller Province of Équateur, and the provinces of Mongala, Nord-Ubangi, Sud-Ubangi, and Tshuapa.