Kosierzewo was formerly part of the German Empire. In the German Empire, the place was called Kusserow.
The place is now called Kosierzewo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kusserow | German Empire | Schlawe i.Pom. | 1939 |
| Kosierzewo | Under Polish administration | Sławno | 1945 |
| Kosierzewo | Poland | Koszalin | 1992 |