The administrative centre was the village of Krossen where Holum Church is located.

The remainder of Holum (the Stubstad and Svalemyren areas, with a population of 9) was merged into the neighboring municipality of Søgne.

[4] The municipality (originally the parish) is named after the old Holme farm (Old Norse: Holeimr) since the first Holum Church was built there.

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

[7] The municipal council (Herredsstyre) of Holum was made up of representatives that were elected to four year terms.