Lancashire, the shire county controlled by the county council is divided into local government districts, Burnley, Chorley, Fylde, Hyndburn, Lancaster, Pendle, Preston, Ribble Valley, Rossendale, South Ribble, West Lancashire, and Wyre.Lancashire rivers drain westwards from the Pennines into the Irish Sea.Lancashire emerged as a major commercial and industrial region during the Industrial Revolution.
The county has a population of 1,449,300 and an area of 1,189 square miles (3,080 km). The history of Lancashire begins with its founding in the 12th century.
In the Domesday Book of 1086, some of its lands were treated as part of Yorkshire.
The county palatine boundaries remain the same as those of the pre-1974 county, with the Duke of Lancaster exercising sovereignty rights, later than many other counties.
During Roman times the area was part of the Brigantes tribal area in the military zone of Roman Britain.
During the 20th century, the county became increasingly urbanised, particularly the southern part.