 It was established in 1776 as the "sloboda" of Troitsko-Zaozyornaya in the land owned by the Troitsko-Turukhansky Monastery.The main occupation of the settlers was mica mining; later placer mining.In 1934, it was granted urban-type settlement status and renamed Zaozyorny due to the anti-religious matters (the "Troitsko-" part of the name means "of the Trinity").