The 2008 census recorded a population of 35,931 in Rumonge, making it Burundi's fourth largest city.

[3] The present hospital has its origins as a dispensary created in 1922 during the Belgian colonial period.

Over the years it steadily expanded, until today it can accommodate a large number of patients.

[4] In May 2024 hundreds of families in Rumonge, particularly the Kanyenkoko district, had to leave their homes due to flooding caused by water from the Murembwe River meeting rising water levels in Lake Tanganyika.

Fields of rice, cassava, banana and sweet potato along the river had also been flooded, and the palm groves had been damaged.