Polljajken was formerly part of the German Empire. In the German Empire, the place was called Polleiken.
The place is now called Nilovo and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Polleyken | German Empire | Gerdauen | 1938 |
| Polleiken | German Empire | Gerdauen | 1939 |
| Polljajken | Under Soviet administration | Kaliningrad | 1945 |
| Nilovo | Russian Federation | Ozersk | 1992 |