Boxholm
Plunge, Lithuania
Quickborn, Germany

Finspång
Yvoir, Belgium
Nordborg, Denmark
Joutsa, Finland
Givet, France
Salaspils, Latvia
Dzierzgon, Poland
Finsterwalde, Germany

Kinda
Amata, Latvia
Kimilili, Kenya

Linköping
Roskilde, Danmark
Joensuu, Finland
Isafjordur, Iceland
Macao, China
Guangzhou, China
Kaunas, Lithuania
Tönsberg, Norway
Oradea, Rumania
Morogoro, Tanzania
Palo Alto, USA
Linz, Austria

Mjölby
Häädemeeste, Estland
Hankasalmi, Finland
Karmøy, Norge

Motala
Hyvinge, Finland
Daugavpils, Latvia
Eigersund, Norway

Norrköping
Odense, Denmark
Klaksvik, Faroe Islands
Tammerfors, Finland
Kopavogur, Iceland
Riga, Latvia
Trondheim, Norway
Esslingen am Neckar, Germany
Linz, Austria

Söderköping
Kangasniemi, Finland
Talsi, Latvia

Vadstena
Bogense, Denmark
Nådendal, Finland
Patreksfjödur, Iceland
Kraslava, Latvia
Svelvik, Norway

Valdemarsvik
Roja, Latvia
Cuccaro, Italy

Ydre
Tohmajärvi, Finland
Carver County, Minnesota, USA

Åtvidaberg
Nuckö, Estonia
Juva, Finland

Ödeshög
Anyksciai, Lithuania
Obol, Belarus

Landstinget i Östergötland
Roskilde Amt, Denmark