Darwen is a market town and civil parish located in Lancashire, England. Along with its northerly neighbour, Blackburn, it forms the Borough of Blackburn with Darwen — a unitary authority area. It is known locally as "Darren" or in quick speech (throughout Lancashire), as "Daa(r)n," or "Darun" or most commonly "Daaa-win," and its residents are known as "Darreners" or "Daane(r)s." The main road through Darwen is the A666 towards Blackburn to the north and Bolton to the south, and ultimately at the Pendlebury boundary with Irlams o' th' Height where it joins the A6, about 4 miles (6 km) north-west of Manchester. Darwen's population decreased to 28,046 in 2011 and is made up of five wards.