The Minisink has never been known as a region with distinct, set boundaries. It generally has been conceived as the valley of the Delaware River going northward from the Delaware Water Gap and including the valley of the Neversink River (a tributary entering the Delaware near Port Jervis, New York). According to Vosburgh, The 'Minisink county' consists of the valley of the Neversink west of the Shawangunk Mountains, and the Delaware valley, as far as the Delaware Water Gap. Some sources imply that it was confined to the width of valley of the Delaware and its surrounding hillsides.