Kaštanovka was formerly part of the German Empire. In the German Empire, the place was called Karlen.
The place is now called Kaštanovka and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Karalkehmen | German Empire | Tilsit-Ragnit | 1938 |
| Karlen | German Empire | Tilsit-Ragnit | 1939 |
| Karalˈkemen | Under Soviet administration | Kaliningrad | 1945 |
| Kaštanovka | Russian Federation | Neman | 1992 |