Olchowo was formerly part of the German Empire. In the German Empire, the place was called Olchowo.
The place is now called Olchowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Olchowo | Russian Empire | Konin | 1914 |
| Olchowo | Poland | Konin | 1921 |
| Olchowo | German Empire | Konin | 1939 |
| Olchowo | Poland | Słupca | 1945 |
| Olchowo | Poland | Konin | 1992 |