Pervomayskoye () is a rural locality (a selo) in Kyakhtinsky District, Republic of Buryatia, Russia. The population was 133 as of 2010.Всероссийские переписи населения 2002 и 2010 годов There are 4 streets.
Geography Pervomayskoye is located 95 km southeast of Kyakhta (the district's administrative centre) by road. Ara-Altsagat is the nearest rural locality.Расстояние от Первомайского до Кяхты
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