Słupsk is a city with powiat rights located on the Słupia River in the Pomeranian Voivodeship in northern Poland, in the historical region of Pomerania or more specifically in its part known in contemporary Poland as Central Pomerania within the wider West Pomerania. According to Statistics Poland, it has a population of 88,835 inhabitants while occupying 43.15 square kilometres (16.66 sq mi), thus being one of the most densely populated cities in the country as of December 2021. In addition, the city is the administrative seat of Słupsk County and the rural Gmina Słupsk, despite belonging to neither.