The area of the district is 3,043 square kilometers (1,175 sq mi).

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

[3] Klyuchevsky District lies in the Kulunda Plain; flat steppe landscape dominates the area.

There are no major rivers running through the district, but there are 26 significant lakes, including Krivaya Puchina, Shukyrtuz, Petukhovo, Petukhovskoye and Kurichye.

[9][10] 52% of the area is arable land for crops, another 20% used in pasture, and the southwest corner of the district is forested.