The district of Koinadugu has a population of 404,097, based on the 2015 Sierra Leone national census;[1] and a total area of 12,121 km2 (4,680 sq mi).

Diamond mining is a major economic activity in the district, as well as agricultural production of rice, mango, cacao, and coconut.

The population of Koinadugu district is almost entirely made up of five main ethnic groups: the Kuranko, Mandingo, Fula, Limba, and Yalunka.

The current chairman of Koinadugu district council is Sheku Samuel Kamara of the All People's Congress (APC).

Mineral mining is a major economic activity in the district, as well as agricultural productivity such as rice, mango, beans, cattle rearing, to name but few.