Polejki was formerly part of the German Empire. In the German Empire, the place was called Polleiken.
The place is now called Polejki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Polleiken | German Empire | Allenstein | 1939 |
| Polejki | Under Polish administration | Olsztyn | 1945 |
| Polejki | Poland | Olsztyn | 1992 |