Cockermouth is an ancient market town and civil parish in the Borough of Allerdale in Cumbria, England, so named because it is at the confluence of the River Cocker as it flows into the River Derwent. The mid-2010 census estimates state that Cockermouth has a population of 8,204, increasing to 8,761 at the 2011 Census.
Historically a part of Cumberland, Cockermouth is situated outside the English Lake District on its northwest fringe. Much of the architectural core of the town remains unchanged since the basic medieval layout was filled in the 18th and 19th centuries. The regenerated market place is now a central historical focus within the town and reflects events from its 800-year history. The town is prone to flooding and experienced severe floods in 2005, 2009, and 2015.