Liverpool is a city and metropolitan borough of Merseyside County, in the Northwest of England, on the east side of the Mersey estuary. Bordered on the north by the metropolitan municipality of Sefton, east to Knowsley, south and west by the said river. It was founded as a borough in 1207 and had that status until 1880, when he received the title of city. According to the latest official census, which dates from 2001, Liverpool had a population of 439,473 inhabitants, 2 this figure rises slightly to 454,654 inhabitants according to estimates by the year 2009.1 The city lies at the heart of Liverpool Metropolitan Area, with a population of to 816,216 inhabitants.