The Demesne ward encompasses the historic core of Armagh City, centred around the Church of Ireland and Roman Catholic cathedrals that dominate the twin hills. This area includes the Armagh Public Library, the former Archbishop's Palace, and the Armagh County Museum, reflecting its long-standing administrative and ecclesiastical significance. The layout follows the original 17th-century street plan, with Georgian architecture lining many thoroughfares.
The ward is defined by the tree-lined Mall, a formal green space with walking paths that serves as a central recreational ground. Residential streets of terraced housing extend from this core, blending with institutional buildings like the former prison and courthouse. The area's character is fundamentally shaped by its elevated cathedral precincts, which offer panoramic views across the surrounding urban landscape.
