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