This article investigates the socio-economic and morphological aspects of how the city of Cork, having lost the salient elements of its medieval character in the early 1600s, transformed into a prosperous Atlantic port city during the period of renaissance it experienced between 1660–1700. Despite the political upheavals caused by the expulsions of the Catholics in the 1640s and 1650s, the city increased in size and population from the early 1660s onwards as it began to thrive on the provisions trade to the colonial plantations of British America. In the process, Cork assumed a higher rank in the general European urban hierarchy.