Rojnići is located in the municipality Barban, in Istra County at an elevation of 320 meters above sea level and it covers the area of 3.38 km² (1.31 sq. miles). According to the 2011 census report, there were 42 inhabitants. It is entirely populated by Croats. Nearby places: Rajki, Petehi, Draguzeti, Cere, Benčići, Vadreš, Orihi, Koromani, Jurićev Kal and Grandići.