Mullaghbane ward lies in the rural southwest of the Newry, Mourne and Down district, bordering County Armagh. The landscape is characterised by low, rolling drumlins and scattered small farms. The settlement pattern is dispersed, with the main residential areas found in the townlands around Mullaghbane and Lissummon. The area is primarily agricultural, with land use dominated by pasture and some tillage.
A notable local feature is the prominent Lissummon Gap, a natural pass through the hills that has long been a significant transport corridor. The historical Lissummon Rock, a large glacial erratic, stands in the area. The ward's quiet roads and laneways connect its isolated dwellings and farmsteads, with views extending towards the distant outline of Slieve Gullion.
