Polanka was formerly part of the German Empire. In the German Empire, the place was called Polanka.
The place is now called Polanka nad Odrou (Ostrava-Polanka) and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Polanka | Austro-Hungary | Wagstadt | before the Treaty of Saint-Germain |
| Polanka | Czechoslovakia | Bílovec | after the Treaty of Saint-Germain |
| Polanka | German Empire | Wagstadt | 1938 |
| Polanka nad Odrou | Czechoslovakia | Bílovec | 1945 |
| Polanka (Ostrava-Polanka) | Czechoslovakia | Ostrava-město | 1992 |
| Polanka nad Odrou (Ostrava-Polanka) | Czech Republic | Ostrava-město | 1993 |