Before the reform in 1970 there were 21 municipalities on the island, of which 6 market city municipalities (Danish: købstadskommuner) and 15 parish municipalities (sognekommuner).
Prior to the 1970 reform, there were 21 municipalities on the island, comprising 6 market town municipalities (Danish: købstadskommuner) and 15 parish municipalities (sognekommuner).