Děčany was formerly part of the German Empire. In the German Empire, the place was called Děčany.
The place is now called Děčany and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Jetschan | Austro-Hungary | Leitmeritz | before the Treaty of Saint-Germain |
| Děčany | Austro-Hungary | Leitmeritz | before the Treaty of Saint-Germain |
| Děčany | Czechoslovakia | Litoměřice | after the Treaty of Saint-Germain |
| Dietschan | German Empire | Raudnitz an der Elbe | 1939 |
| Děčany | German Empire | Raudnitz an der Elbe | 1939 |
| Děčany | Czechoslovakia | Lovosice | 1945 |
| Děčany | Czechoslovakia | Litoměřice | 1992 |
| Děčany | Czech Republic | Litoměřice | 1993 |