'''Rusko''' (Swedish:Pöytis) is a municipality in the region [[Lounais-Suomi]] located in the Southwest Finland region. The municipality has a population of 6,252 (31 January 2019) and covers an area of 127.90 square kilometres (49.38 sq mi) of which 0.78 km2 (0.30 sq mi) is water. The population density is 49.18 inhabitants per square kilometre (127.4/sq mi).