Szlasy-Łozino was formerly part of the German Empire. In the German Empire, the place was called Schlasy *.
The place is now called Szlasy-Łozino and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Szlasy Losino | Russian Empire | Cehanov | 1914 |
| Szlasy-Łozino | Poland | Ciechanów | 1919 |
| Schlasy * | German Empire | Zichenau | 1939 |
| Szlasy-Łozino | Poland | Maków Mazowiecki | 1945 |
| Szlasy-Łozino | Poland | Ostrołęka | 1992 |