Soča is located on the upper Soča River in the Goriška region, the northern part of the Slovene Littoral, on the road from Bovec up to Trenta and the Vršič Pass. The territory of the village includes scattered farms on various foothills, promontories, and terraces in the narrow valley. Hamlets and farmsteads in the village include Brvca (a.k.a. Jezerca), Črč, Gorenja Soča, Lemovje, Log, Mišja Vas, Na Skali, Pod Bregom, Pod Skalo, Podklanec, Pri Kumerčih, V Klancu, Vršičem, and Vrsnik. To the northwest, the valley rises steeply to Mount Bavšica Grintavec () and Little Mount Grintavec (). To the southeast, the valley rises more gradually to a plateau region.