Joutseno is a former town and municipality of Finland. It is located in the province of Southern Finland and is part of the South Karelia region. Joutseno had a population of 10,821 (2004) and covers an area of 498,8 km² of which 187,7 km² is water. The region shares nine kilometers of borderline with Russia. The population density is 34,8 inhabitants per km². Joutseno is unilingually Finnish. Until 2005, Joutseno's status was changed to city. Joutseno was consolidated with Lappeenranta on 2009-01-01.A referendum was held, by public demand, before the amalgamation and the result was 73.9% against joining Lappeenranta. The referendum result was not considered binding, however, and the merger was carried out regardless.