Ośno Lubuskie is a town in Słubice County, Lubusz Voivodeship, in western Poland. It has 3,951 inhabitants. Ośno Lubuskie is located n…Ośno Lubuskie is a town in Słubice County, Lubusz Voivodeship, in western Poland. It has 3,951 inhabitants. Ośno Lubuskie is located near the river Łęcza and the lake Reczynek. It is located in the historic Lubusz Land.