Located in the Upper Galilee in the northeastern Hula Valley, it falls under the jurisdiction of Mevo'ot HaHermon Regional Council.
She'ar Yashuv was first founded in February 1940 along with Beit Hillel as part of the Tower and Stockade system by 30 families from the HaNoar HaTzioni ("Zionist Youth") and HaOved HaTzioni ("Zionist Workers").
When the battles of the 1948 Arab–Israeli War ended and a ceasefire was declared at the end of 1948, most of the inhabitants abandoned the community because of artillery shells fired by Syria from Tel Azaziat, which overlooks the village from the east.
This time, by members of HaNoar HaTzioni from Hungary who survived the Holocaust and had come to Israel during the war.
After the war it also gained some land that had belonged to the depopulated Palestinian village of al-Mansura.