Roscrea is a historical market town in County Tipperary, Ireland. In 2011 the town had a population of 5,403. Its main industries include meat processing and pharmaceuticals. It is one of eleven civil parishes in the historical barony of Ikerrin. It is also an Ecclesiastical parish in the Roman Catholic Diocese of Killaloe. The town is one of the oldest in Ireland which developed around the ancient monastery of St Cronan, parts of which remain preserved today.