Helenow I was formerly part of the German Empire. In the German Empire, the place was called Helenów.
The place is now called Helenów and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Helenow I | Russian Empire | Gostyn | 1914 |
| Helenow II | Russian Empire | Gostyn | 1914 |
| Helenów I | Poland | Gostynin | 1921 |
| Helenów II | Poland | Gostynin | 1921 |
| Helenów | German Empire | Waldrode | 1939 |
| Helenów Reszkowski | Poland | Gostynin | 1945 |
| Helenów | Poland | Płock | 1992 |