Koczek was formerly part of the German Empire. In the German Empire, the place was called Waldersee.
The place is now called Koczek and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kotzek | German Empire | Johannisburg | 1914 |
| Waldersee | German Empire | Johannisburg | 1939 |
| Koczek | Under Polish administration | Pisz | 1945 |
| Koczek | Poland | Suwałki | 1992 |