Lake Constance, in Europe, has about a dozen islands, including some former islands that are now attached to the mainland.
Island Area (m2) Population Municipality Country Coordinates 1 Galgeninsel - Lindau (Reutin district) Germany 2 Hoy - Lindau (Reutin district) Germany 3 Lindau Lindau (Island district) Germany 4 Wasserburg Wasserburg (Island district) Germany 5 Mainau Konstanz (Litzelstetten district) Germany 6 Dominicans Island Konstanz (Altstadt district) Germany 7 Mittlerer Langbohl - Konstanz (Industriegebiet district) Germany 8 Triboldingerbohl - Konstanz (Industriegebiet district) Germany 9 Reichenau Mittelzell|Oberzell) Germany 10 Liebesinsel - Radolfzell (Mettnau district) Germany 11 Werd Eschenz (Untereschenz district) Switzerland 12 Mittleres Werdli - Stein am Rhein Switzerland 13 Unteres Werdli - Stein am Rhein Switzerland Lake Constance Islands 6 municipalities