By Dr Neil Clifton, CC BY-SA 2.0, 

It had a population of 5,703 people in the 2011 Census.

Ballynahinch was traditionally a market town, although the market still takes place in the square every Thursday. The town lies on the main A24 Belfast to Newcastle road 15 miles (24 km) south of Belfast. Facilities in the town include a leisure centre. In recent years a regeneration committee has been formed for the development of the town and the surrounding Spa and Drumaness areas.