Kokosken was formerly part of the German Empire. In the German Empire, the place was called Hennenberg.
The place is now called Kokoszki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kokosken | German Empire | Lyck | 1930 |
| Hennenberg | German Empire | Lyck | 1939 |
| Kokoszki | Under Polish administration | Ełk | 1945 |
| Kokoszki | Poland | Suwałki | 1992 |