From the Wikipedia page 
Suoyarvsky District (Russian: Суоя́рвский райо́н; Karelian: Suojärven piiri) is an administrative district (raion), one of the fifteen in the Republic of Karelia, Russia. It is located in the west of the republic. The area of the district is 13,731 square kilometers (5,302 sq mi). Its administrative center is the town of Suoyarvi.
Within the framework of administrative divisions, Suoyarvsky District is one of the fifteen in the Republic of Karelia and has administrative jurisdiction over one town (Suoyarvi) and twenty-six rural localities. As a municipal division, the district is incorporated as Suoyarvsky Municipal District. The town of Suoyarvi is incorporated into an urban settlement, while the twenty-six rural localities are incorporated into four rural settlements within the municipal district. The town of Suoyarvi serves as the administrative center of both the administrative and municipal district.