Saint Johnstown, Delaware, USA was a stop on the now defunct Queen Anne's Railroad line between Ellendale and Greenwood. After the railroad closed down and the tracks were removed, all property owned by the railroad was returned to its previous landowners and several small towns built around the stops disappeared.

Saint Johnstown, Delaware
Unincorporated community
Saint Johnstown
Coordinates: 38°48′18″N 75°34′32″W / 38.80500°N 75.57556°W / 38.80500; -75.57556
Country	United States
State	Delaware
County	Sussex
Elevation	52 ft (16 m)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
Area code	302
GNIS feature ID	217429[1]