Pavinsky District is an administrative and municipal district (raion), one of the twenty-four in Kostroma Oblast, Russia. It is located in the northeast of the oblast. The area of the district is 1,600 square kilometers (620 sq mi). Its administrative center is the rural locality of Pavino. Population: 3,115 (2021 census); 5,102 (2010 census); 6,217 ; 7,933 (1989 Soviet census). The population of Pavino accounts for 55.3% of the district's total population.