The municipality included the Stavanger Peninsula and the land surrounding both sides of the Gandsfjorden, but not the area around the head of the fjord.

Also on 1 January 1912, a small area in Høyland municipality (population: 41) was transferred to Hetland.

[4] On 1 January 1965, there were many major municipal changes in Norway due to the work of the Schei Committee.

The parts of Hetland located east of the Gandsfjorden, namely the districts of Riska and Dale (population: 2,077) were merged into a much larger Sandnes municipality.

The rest of Hetland, located on the west side of the fjord (population: 20,861) was merged into the municipality of Stavanger, greatly expanding its size.