Sokollen was formerly part of the German Empire. In the German Empire, the place was called Hainholz (Ostpr.).
The place is now called Sokoły and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sokollen | German Empire | Goldap | 1938 |
| Hainholz (Ostpr.) | German Empire | Goldap | 1939 |
| Sokoły | Under Polish administration | Gołdap | 1945 |
| Sokoły | Poland | Suwałki | 1992 |