Kozirog Lesny was formerly part of the German Empire. In the German Empire, the place was called Ziegenhorn.
The place is now called Koziróg Leśny and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kozirog Lesny | Russian Empire | Lipno | 1914 |
| Koziróg Leśny | Poland | Lipno | after the Versailles Treaty |
| Ziegenhorn | German Empire | Leipe (Westpr.) | 1939 |
| Koziróg Leśny | Poland | Lipno | 1945 |
| Koziróg Leśny | Poland | Włocławek | 1992 |