Flag of Koszalin
| Proportion | 5:8 |
|---|---|
| Adopted | 10 February 1959 |
The flag, that serves as the symbol of the city of Koszalin, West Pomeranian Voivodeship, in north-western Poland, is divided horizontally into two equally-sized stripes, white on the top, and blue on the bottom. It was established in 1959.