Zapolyarny District (Russian: Заполя́рный райо́н, Nenets: Поляртяхӑна район) is an administrative and municipal district (raion), the only one in Nenets Autonomous Okrug, Russia. It encompasses all of the territory of the autonomous okrug, with the exception of the territory of the town of okrug significance of Naryan-Mar, the only other top-level administrative division of the autonomous okrug. The area of the district is approximately 170,000 square kilometers (66,000 sq mi). Its administrative center is the urban locality (a work settlement) of Iskateley. Population: 20,432 (2010 Census). The population of Iskateley accounts for 33.7% of the district's total population.