Cilˈkajm was formerly part of the German Empire. In the German Empire, the place was called Zielkeim.
The place is now called Petrovo and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Zielkeim | German Empire | Samland | 1939 |
| Cilˈkajm | Under Soviet administration | Kaliningrad | 1945 |
| Petrovo | Russian Federation | Gurˈevsk | 1992 |