Söderbäck is a village in Robertsfors Municipality, in Västerbotten County, Sweden. Söderbäck lies at 112 m above sea level. The nearest city is Skellefteå, 51 km to the north. Among the landmarks around are Överklintens kyrka (9.2 km), Nysätra Church (11.8 km) and Robertsfors kyrka (12.8 km).