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 gainst joining Lappeenranta. The referendum result was not considered binding, however, and the merger was carried out regardless.