Because of this, Strømmen was established as its own municipality located wholly within Jarlsberg og Laurvig county.

[6] The municipality (originally the parish) is named after the old Strømmen farm (Old Norse: Straumr) which is now where the town of Svelvik is located.

This is referring to the strong current in the narrow strait in the Drammensfjorden between Svelvik and Hurum.

On 3 November 1917, a royal resolution changed the spelling of the name of the municipality to Strømm, removing the definite form ending -en.

[9] The municipal council (Herredsstyre) of Strømm was made up of 21 representatives that were elected to four year terms.