It borders the counties of Västra Götaland, Jönköping, Kronoberg, Scania and the sea of the Kattegat.

The major exception is a part of Hylte Municipality, which belongs to the province of Småland.

The main aim of the County Administrative Board is to fulfil the goals set in national politics by the Riksdag and the Government, to coordinate the interests and promote the development of the county, to establish regional goals and safeguard the due process of law in the handling of each case.

The right-leaning political parties have held a majority in every election from 1912 until 2014, regaining it in 2018 and losing it again in 2022.

The table details all Riksdag election results of Halland County since the unicameral era began in 1970.