The small village of Holmsbu was granted town status in 1847, but it did not become a municipality of its own.

The plan was, however, abandoned, due to fears of too much fog in Hurum, and the main airport is now situated at Gardermoen in Akershus.

The arms show two blue wavy lines on a silver background.

To the west the coastline is located close to the eastern coast of Vestfold with Svelvik.

It is connected to the eastern side of the Oslofjord via Oslofjordtunnel, one of the longest undersea tunnels of its kind in Northern Europe.

The tunnel is 7.2 kilometres (4.5 mi) long and connects Hurumhalvøya to Akershus county.

Hurum is located on the southern part of Hurumhalvøya, which is the peninsula between the Oslofjord and Drammensfjord.

Naval hero and native son, Ivar Huitfeldt (1665-1710) was buried in the church yard.