Sernursky District
Sernursky District is an administrative and municipal district, one of the fourteen in the Mari El Republic, Russia. It is located in the northeast of the republic. The area of the district is. Its administrative center is the urban locality of Sernur. As of the 2010 Census, the total population of the district was 25,672, with the population of Sernur accounting for 33.8% of that number.