Birmingham is a city and metropolitan borough in the West Midlands, England. It is the largest and most populous British city outside London with 1,101,360 residents (2014 est.), and its population increase of 88,400 residents between the 2001 and 2011 censuses was greater than that of any other British local authority. The city lies within the West Midlands Built-up Area, the third most populous built-up area in the United Kingdom with 2,440,986 residents (2011 census), and its metropolitan area is the United Kingdom's second most populous with 3,701,107 residents (2012 est.) and is also the 9th largest metropolitan area in Europe.