Linköping Municipality is a municipality in Östergötland County in southern Sweden. With more than 165,000 inhabitants, it is the fifth largest municipality in Sweden.

Östergötland County is a county or län in southeastern Sweden. It has land borders with the counties of Kalmar to the southeast, Jönköping to the southwest, Örebro to the northwest, and Södermanland to the northeast. It also has a sea border with Västra Götaland to the west, and borders the Baltic Sea to the east.