[7] It is located in the eastern-central portion of the oblast.

The area of the district is 33,300 square kilometers (12,900 sq mi).

[2] Its administrative center is the rural locality (a selo) of Kazachinskoye.

[4] Kazachinsky District (Казачинский район) was established within Kirensk Okrug of Irkutsk Oblast on June 26, 1926.

The Kirenga River is the main water body of the Kazachinsky District.