The building is located between Saint Mark's Road and Regent Street in the city centre and Offa, bounded by Wrexham Cathedral to the west.

The building is located on the corner of Saint Mark's Road and Regent Street, in the city centre of Wrexham and in the community of Offa.

[1][2] Former County Buildings is two-storeys, with a five-bay entrance front which is flanked either side by advanced gabled ranges.

The building is composed of roughly coursed and squared stone with freestone dressings and steep slate roofs.

[1] Internally, the building's layout was modified in 1980, with rooms enlarged, a circulation space created and the courtyard enclosed.

[6] The building also provided as the home for the militia's officers, whereas the soldiers resided in houses around the then town and trained for one month annually.

The building was remodelled internally and externally to have two court rooms upstairs and a number of cells on the ground-floor for individuals on remand or accommodated overnight when showing signs of alcohol intoxication.

The exercise yard for prisoners is present today and surrounded by high walls to prevent escape.