Bacup (/ˈbeɪkəp/ BAY-kəp, /ˈbeɪkʊp/) is a town in the Rossendale Borough in Lancashire, England, in the South Pennines close to Lancashire's boundaries with West Yorkshire and Greater Manchester. The town is in the Rossendale Valley and the upper Irwell Valley, 4 miles (6.4 km) east of Rawtenstall, 6 miles (9.7 km) north of Rochdale, and 7 miles (11 km) south of Burnley. At the 2011 Census, Bacup had a population of 13,323.