Photo from Digital-Topo-Maps.com | Mount Vernon, IL 62864 Post Office Location: 726 Park Plaza; Moutn Vernon, IL Year Post Office built: Town(s) Served: Mount Vernon Acceptable City Names: Moutn Vernon Not Acceptable City Names: Bakersville, Camp Ground, Dodds, Idlewood, Marcoe, Miller Lake, Mount Vernon OUtland Airport, Summersville Sectional Service Facility: Centralia County(ies): Jefferson Info on Mount Vernon: The City of Mount Vernon is the county seat of Jefferson County. It is located along Interstate 57, Interstate 64, Illinois 15, Illinois 37, the Canadian National Railroad, Evansville & Western Railroad, Norfolk Southern Railroad, and the Union Pacific Railroad. The city was founded in 1817. |