Norrköping is a city in the province of Östergötland in eastern Sweden and the seat of Norrköping Municipality, Östergötland County, about 160 km southwest of the national capital Stockholm, 40 km east of county seat Linköping and 60 km west of the Södermanland capital of Nyköping. The city has a population of 95,618 inhabitants in 2016, out of a municipal total of 130,050, making it Sweden's tenth largest city and eighth largest municipality.

Östergötland is one of the traditional provinces of Sweden in the south of Sweden. It borders Småland, Västergötland, Närke, Södermanland and the Baltic Sea. In older English literature, the Latinized version Ostrogothia is also used. The corresponding administrative county, Östergötland County, covers the entire province and parts of neighbouring provinces.