Kirmenjak is located in the City of Poreč, in Istra County at an elevation of 159 meters above sea level and it covers the area of 1.33 km² (0.51 sq. miles). According to the 2011 census report, there were 48 inhabitants. It is largely populated by Croats (86%), but also Serbs (6%). Nearby places: Šušnjići, Ružići, Radmani, Šeraje, Ladrovići, Montižana, Mičetići, Žbandaj, Matulini and Medvidići.