Mleczna was formerly part of the German Empire. In the German Empire, the place was called Lohetal.
The place is now called Mleczna and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Mlietsch | German Empire | Reichenbach (Eulengebirge) | 1936 |
| Lohetal | German Empire | Reichenbach (Eulengebirge) | 1939 |
| Mleczna | Under Polish administration | Dzierżoniów | 1945 |
| Mleczna | Poland | Wrocław | 1992 |