Hreljin administratively belongs to the city of Bakar, situated in Primorje-Gorski Kotar County - Primorsko-goranska županija. The village includes the hamlets of Solnice (center of village), Pod Solnice, Biljin, Raskrizje, Stara cesta, Copovsko, Knezovo, Tursko, Vidasko, Sobolsko, Zastene, Gaj, Maj, Lonja, Glavicina, Dorisko, Placa, Kalac, Dragi...