Join us to learn about the Codorus Valley, the area between the three main branches of the Codorus Creek in southwestern York County. This area has become a center hub for development in York and, at the same time, retains parts of the past. The Codorus Valley was first settled by Germans from the Palatinate region as west of the Susquehanna opened to settlement in the 1730s. It had some of the earliest roads, the first railroads, and some of York’s earliest churches in addition to some of the confusion of boundaries of what became known as the Mason Dixon Line.