The municipality of Stjørna also included the villages of Høybakken, Råkvåg, and Fevåg.

On 3 November 1917, a royal resolution changed the spelling of the name of the municipality to Stjørna.

At the time of the municipal dissolution, it was part of the Bjugn prestegjeld and the Fosen prosti (deanery) in the Diocese of Nidaros.

[8] Stjørna Municipality included the land surrounding the Stjørnfjorden on the Fosen peninsula.

The highest point in the municipality was the 492.5-metre (1,616 ft) tall mountain Seksortklumpen.

The municipal council (Herredsstyre) of Stjørna was made up of 17 representatives that were elected to four year terms.