Domkau was formerly part of the German Empire. In the German Empire, the place was called Domkau.
The place is now called Domkowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Domkau | German Empire | Osterode i. Ostpr. | 1939 |
| Domkowo | Under Polish administration | Ostróda | 1945 |
| Domkowo | Poland | Olsztyn | 1992 |