Mierczyce was formerly part of the German Empire. In the German Empire, the place was called Mertschütz.
The place is now called Mierczyce and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Mertschütz | German Empire | Liegnitz | 1939 |
| Mierczyce | Under Polish administration | Legnica | 1945 |
| Mierczyce | Poland | Legnica | 1992 |