Solvychegodsk is a town in Kotlassky District of Arkhangelsk Oblast, Russia, located on the right-hand bank of the Vychegda River, about 25 kilometers (16 mi) northeast of Kotlas, the administrative center of the district. Population: 2,460 (2010 Russian census); 2,843 (2002 Census); 4,004 (1989 Soviet census).

Kotlassky District is an administrative district (raion), one of the twenty-one in Arkhangelsk Oblast, Russia. As a municipal division, it is incorporated as Kotlassky Municipal District. It is located in the southeast of the oblast and borders with Krasnoborsky District in the north, Lensky District in the northeast, Vilegodsky District in the east, Luzsky District of Kirov Oblast and Velikoustyugsky District of Vologda Oblast in the south, and with Ustyansky District in the west. The area of the district is 6,300 square kilometers (2,400 sq mi). Its administrative center is the town of Kotlas. Population: 21,005 (2010 Russian census); 24,964 (2002 Census); 32,800 (1989 Soviet census).