Carrowreagh is situated in the northeastern part of the Lisburn and Castlereagh district. The area is primarily residential, characterised by housing developments and local community infrastructure. It lies close to the main Belfast to Dublin railway line, with the Knockmore halt serving the area. The ward contains pockets of green space and playing fields, contributing to its suburban character.
The land use is mixed, with some light industrial and commercial premises located along its main transport routes. The ward is bordered by the River Lagan to the west, which influences its boundary. Residential streets are organised around several local primary schools, forming focal points for the community. The topography is generally gentle, with views towards the Castlereagh Hills in the near distance.
