Omsky District () is an administrativeLaw #467-OZ and municipalLaw #548-OZ district (raion), one of the thirty-two in Omsk Oblast, Russia. It is located in the southern central part of the oblast. The area of the district is . Its administrative center is the rural locality (a settlement) of Rostovka. Population: 94,086 (2010 Census); The population of Rostovka accounts for 5.8% of the district's total population.
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