[6] The area of the district is 139,043 square kilometers (53,685 sq mi).

[3] Its administrative center is the rural locality (a selo) of Yerbogachen.

[4] Historically, the district formed part of the now-defunct Preobrazhensky District, the seat of which was the village of Preobrazhenka, Irkutsk Oblast [ru].

In 1930, Preobrazhensky District was incorporated into newly formed Evenki National Raion of Katanga.

That raion lost its national status prior to 1940, since when it has existed as the Katangsky District.