Karlovec (Opava-Karlovec) was formerly part of the German Empire. In the German Empire, the place was called Karlsau (Troppau-Karlsau).
The place is now called NN and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Karlsau (Troppau-Karlsau) | Austro-Hungary | Troppau | before the Treaty of Saint-Germain |
| Karlovec (Opava-Karlovec) | Czechoslovakia | Opava | after the Treaty of Saint-Germain |
| Karlsau (Troppau-Karlsau) | Czechoslovakia | Opava | after the Treaty of Saint-Germain |
| Karlsau (Troppau-Karlsau) | German Empire | Troppau (St.Kr.) | 1938 |
| NN | Czechoslovakia | Opava, Statutární město | 1945 |
| NN | Czechoslovakia | Opava | 1992 |
| NN | Czech Republic | Opava | 1993 |