Zrmanja Vrelo is located in the municipality Gračac, in Zadar County at an elevation of 621 meters above sea level and it covers the area of 28.54 km² (11.02 sq. miles). According to the 2011 census report, there were 32 inhabitants. It is largely populated by Serbs (80%), but also Croats (20%). Nearby places: Nadvrelo, Kom, Zrmanja, Cerovac, Prljevo, Rastičevo, Otrić, Palanka, Pribudić and Duboki Dol.