Maružini is located in the municipality Kanfanar, in Istra County at an elevation of 120 meters above sea level and it covers the area of 1.71 km² (0.66 sq. miles). According to the 2011 census report, there were 84 inhabitants. It is predominantly populated by Croats (91%), but also Hungarians (5%). Nearby places: Burići, Marići, Salambati, Smoljanci, Karlovići, Kanfanar, Šivati, Raponji, Debeljuhi and Modrušani.