Lidingö, also known in its definite form Lidingön and as Lidingölandet, is an island in the inner Stockholm archipelago, northeast of Stockholm, Sweden. In 2010, the population of the Lidingö urban area on the island was 31,561. It is the seat of government of the Lidingö Municipality, Stockholm County. Lidingö's qualities have attracted affluent residents such as Björn Ulvaeus, Agnetha Fältskog, Anni-Frid Lyngstad and Benny Andersson of ABBA.