In European terms, Kemi-Tornio represents a unique urban junction where two regions in different countries, Finland and Sweden, operate together in close co-operation. The boundless co-operation in this geographical region has a history that reaches centuries back. The Finnish Kemi-Tornio region comprises the cities of Kemi and Tornio, as well as the municipalities of Keminmaa, Simo and Tervola. This region works closely together with the town of Haparanda in Sweden.
As of 30 October 2010, the total population of the Kemi-Tornio region was 60.567 residents.