Onondaga Hollow, also known as Onondaga Valley,[1] was a village in Onondaga County, New York,[2] from 1784 to 1926.[3][4] It was the first county seat and one of the most prominent settlements in the early years of white inhabitation in the region.[5] The village was annexed into the city of Syracuse, New York, in 1926,[4] and today makes up the southernmost portion (North Valley and South Valley).[6]