Imionki was formerly part of the German Empire. In the German Empire, the place was called Prostkergut.
The place is now called Imionki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Prostkergut | German Empire | Treuburg | 1939 |
| Imionki | Under Polish administration | Olecko | 1945 |
| Imionki | Poland | Suwałki | 1992 |