Polubaše is located in the City of Našice, in Osijek-Baranja County at an elevation of 150 meters above sea level and it covers the area of 3.31 km² (1.28 sq. miles). According to the 2011 census report, there were 17 inhabitants. It is entirely populated by Croats. Nearby places: Granice, Stojčinovac, Crna Klada, Mokreš, Rozmajerovac, Novi Zdenkovac, Dobra Voda, Stari Zdenkovac, Jezero and Londžica.