Matijaši is located in the municipality Žminj, in Istra County at an elevation of 298 meters above sea level and it covers the area of 1.52 km² (0.59 sq. miles). According to the 2011 census report, there were 55 inhabitants. It is predominantly populated by Croats (92%), but also. Nearby places: Pifari, Krničari, Prkačini, Kresini, Orbanići, Kršanci, Vidulini, Pamići, Krajcar Breg and Vadediji.