Podgorodnoe was formerly part of the German Empire. In the German Empire, the place was called Tuppen.
The place is now called Podgorodnoe and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Tuppen | German Empire | Schloßberg (Ostpr.) | 1939 |
| Tuppen | Under Soviet administration | Kaliningrad | 1945 |
| Podgorodnoe | Russian Federation | Krasnoznamensk | 1992 |