Sum, sumu, sumon, and sumuud are a type of administrative district used in Mongolia, Russia, and China.
Mongolia
A sum (Mongolian: сум, arrow) is the second level administrative subdivision below the Aimags (provinces), roughly comparable to a County in the USA. There are 331 sums in Mongolia. Each sum is again subdivided into bags.
China
In Inner Mongolia, a sumu (Chinese: 苏木; pinyin: sūmù) is a township-level political/administrative division. The sumu division is equivalent to a township but is unique to Inner Mongolia. It is therefore larger than a village and smaller than a banner (the Inner Mongolia equivalent of the county-level division). Sumu whose population is predominated by ethnic minorities are designated ethnic sumu – parallel with the ethnic township in the rest of China.
Russian Federation
In Russia, a sumon is an administrative division of the Tuva Republic, and sumuud is that of the Buryat Republic. Both are describing the Russian term "selsoviet".
