Photo from Digital-Topo-Maps.com | Williamsport, IN 47993 Post Office Location: 115 East 2nd Street; Williamsport, IN Year Post Office built: Town(s) Served: Williamsport Acceptable City Names: Marshfield, Pence, Williamsport Not Acceptable City Names: Sectional Service Facility: Lafayette County(ies): Warren Info on Williamsport: The Village of Williamsport is the county seat of Warren County. Indiana 28, passes through Williamsport. The town was platted out in 1829. It was then incorporated in 1854. Williamsport got it's first post office in 1829. Near the center of town is Williamsport Falls. This is the highest waterfall in the State of Indiana. |