Districts of Mongolia

A Sum (Mongolian сум ) is an administrative unit of the second level in Mongolia. The aimags of Mongolia are divided into 331 Sums.

On average, the area of some 4,200 km2 Sums, with a population of about 5,000 inhabitants, most of them nomadic cattle breeders.

Each sum is again subdivided into several bag. Most bags are purely administrative units, without a fixed settlement.

Often, the administrative center of Sums is formally and on some cards have a different name, in everyday language, the settlement is almost always equated with the sum, to the widespread lack of knowledge of the official name among the locals. (Example: Tariat )