Norrkoping is a city in the province of Ostergotland in eastern Sweden and the seat of Norrkoping Municipality, Ostergotland County. The city has a population of 87,247 inhabitants in 2010, out of a municipal total of 130,050, making it Sweden's tenth largest city and eighth largest municipality. The city is situated by the mouth of the river Motala strom, at Braviken, an inlet of the Baltic Sea. Water power from the Motala strom and the good harbour were factors that facilitated the rapid growth of this once industrial city, known for its textile industry. It has several nicknames such as: "Sweden's Manchester", "Peking" and "Surbullestan".