Białachówko was formerly part of the German Empire. In the German Empire, the place was called Kleinbelchau.
The place is now called Białachówko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Klein-Bialachowo | German Empire | Preußisch Stargard | before the Versailles Treaty |
| Białachówko | Poland | Starogard | after the Versailles Treaty |
| Kleinbelchau | German Empire | Preußisch Stargard | 1939 |
| Białachówko | Poland | Starogard Gdański | 1945 |
| Białachówko | Poland | Gdańsk | 1992 |