Sveti Ivan is located in the municipality Oprtalj, in Istra County at an elevation of 290 meters above sea level and it covers the area of 2.57 km² (0.99 sq. miles). According to the 2011 census report, there were 41 inhabitants. It is mostly populated by Croats (52%), but also Italians (39%). Nearby places: Vižintini Vrhi, Sveta Lucija, Makovci, Oprtalj, Šterna, Antonci, Završje, Krajići, Čepić and Šorgi.