Kloštar is located in the municipality Sveti Lovreč, in Istra County at an elevation of 117 meters above sea level and it covers the area of 5.73 km² (2.21 sq. miles). According to the 2011 census report, there were 39 inhabitants. It is entirely populated by Croats. Nearby places: Kontešići, Marasi, Gradina, Medaki, Krunčići, Bralići, Stranići kod Lovreča, Begi, Rajki and Delići.