Kobylin Jedyty, D. was formerly part of the German Empire. In the German Empire, the place was called Kobylin Jedyty.
The place is now called Kobylin-Jedyty and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kobylin Jedyty, D. | Russian Empire | Cehanov | 1914 |
| Kobylin-Jedyty, D. | Poland | Ciechanów | 1919 |
| Kobylin Jedyty | German Empire | Zichenau | 1939 |
| Kobylin-Jedyty | Poland | Ciechanów | 1945 |
| Kobylin-Jedyty | Poland | Ciechanów | 1992 |