Kotzargen was formerly part of the German Empire. In the German Empire, the place was called Eichhöhe.
The place is now called Koczarki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kotzargen | German Empire | Sensburg | 1929 |
| Eichhöhe | German Empire | Sensburg | 1939 |
| Koczarki | Under Polish administration | Mrągowo | 1945 |
| Koczarki | Poland | Olsztyn | 1992 |