Chainsky District () is an administrativeLaw #271-OZ and municipalLaw #205-OZ district (raion), one of the sixteen in Tomsk Oblast, Russia. It is located in the center of the oblast. The area of the district is . Its administrative center is the rural locality (a selo) of Podgornoye. Population: 12,920 (2010 Census); The population of Podgornoye accounts for 38.6% of the district's total population.
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