Mountain Creek is a suburb in the Sunshine Coast Region, Queensland, Australia. In the 2021 census, Mountain Creek had a population of 11,950 people. Mountain Creek was named after the creek of the same name that drains the southern slopes of Buderim. It is tidal for a short distance and flows into the Mooloolah River above the Cod Hole and the Traffic Briā¦Mountain Creek is a suburb in the Sunshine Coast Region, Queensland, Australia. In the 2021 census, Mountain Creek had a population of 11,950 people. Mountain Creek was named after the creek of the same name that drains the southern slopes of Buderim. It is tidal for a short distance and flows into the Mooloolah River above the Cod Hole and the Traffic Bridge on the Nicklin Way.