Mleczewo was formerly part of the German Empire. In the German Empire, the place was called Heinrode.
The place is now called Mleczewo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Mlecewo | German Empire | Stuhm | before the Versailles Treaty |
| Mlecewo | German Empire | Stuhm | after the Versailles Treaty |
| Heinrode | German Empire | Stuhm | 1939 |
| Heinrode | German Empire | Stuhm | 1939 |
| Mleczewo | Under Polish administration | Gdańsk | 1945 |
| Mleczewo | Poland | Elbląg | 1992 |