Koslin is a town in West Pomeranian Voivodeship , the second largest city in western Pomerania . The largest city of the Middle Pomerania region (Middle-Pomerania). Located on the Koszalin River, on the Dzierżęcinki River, on the lakes: Jamno and Lubiatowo North . The seat of the Koszalin district , the district court, the department of the local Marshal's Office and the delegation of the voivodship office.
According to data from June 30, 2015, the city had 108,576 inhabitants.