Gilnahirk is a residential ward located on the southeastern edge of Belfast, bordering the Castlereagh Hills. The area is characterised by quiet, leafy streets and a mix of housing, primarily consisting of detached and semi-detached homes built from the mid-20th century onward. Its elevated position offers clear views over the city and towards the Belfast Hills, contributing to its suburban atmosphere. The layout is defined by several main roads that connect it to the city centre and surrounding districts.
The ward is served by local shopping parades on the Gilnahirk and Glencregagh Roads, providing essential amenities. A notable local feature is the presence of the "Four Winds" area, a name derived from a historic inn, which marks a significant junction. Recreational space is provided by the Gilnahirk Park playing fields. The area is primarily a settled residential community, with educational needs met by several schools, including Gilnahirk Primary School on the central Gilnahirk Road.