The island municipality encompassed the central part of the island of Dønna as well as the smaller surrounding islands of Vandve, Slapøya, Havstein, and many others in what is now the southern part of Dønna Municipality. The municipality had 2 churches: Nordvik Church in the north and Hæstad Church in the south.
The island municipality encompassed the central region of Dønna Island along with Vandve, Slapøya, Havstein, and other smaller islands that are now part of the southern area of Dønna Municipality. The municipality had two churches: Nordvik Church in the north and Hæstad Church in the south.