Ballincollig is a suburban town within the administrative area of Cork city in Ireland. It is located on the western side of Cork city, beside the Riveā¦Ballincollig is a suburban town within the administrative area of Cork city in Ireland. It is located on the western side of Cork city, beside the River Lee on the R608 road. In 2016 it was the largest town in County Cork, at which time the Ballincollig Electoral Division had a population of 18,621 people. It is located beyond the green belt from the suburbs of Bishopstown and Wilton. Historically home to the Ballincollig Royal Gunpowder Mills which is now a Regional Park, the town has seen much growth in recent years as a satellite of Cork city. In 2024, Ballincollig was named the tidiest town in Ireland.