Prkačini is located in the municipality Žminj, in Istra County at an elevation of 65 meters above sea level and it covers the area of 1.39 km² (0.54 sq. miles). According to the 2011 census report, there were 32 inhabitants. It is entirely populated by Croats. Nearby places: Pifari, Vidulini, Krajcar Breg, Matijaši, Kršanci, Krničari, Pamići, Kresini, Orbanići and Ladići.