Domacyno was formerly part of the German Empire. In the German Empire, the place was called Dumzin.
The place is now called Domacyno and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Dumzin | German Empire | Kolberg-Körlin | 1939 |
| Domacyno | Under Polish administration | Kołobrzeg | 1945 |
| Domacyno | Poland | Koszalin | 1992 |