Sovinjak is located in the City of Buzet, in Istra County at an elevation of 283 meters above sea level and it covers the area of 1.93 km² (0.75 sq. miles). According to the 2011 census report, there were 29 inhabitants. It is predominantly populated by Croats (94%), but also. Nearby places: Sirotići, Pračana, Sovinjsko Polje, Podrebar, Sovinjska Brda, Veli Mlun, Sveti Donat, Vrh, Mali Mlun and Senj.