Borough of Berwick-upon-Tweed Borough of Berwick-upon-Tweed Berwick-upon-Tweed was a local government district and borough in Northumberland in the north-east of England, on the border with Scotland. The district had a resident population of 25,949 according to the 2001 census, which also notes that it is the most ethnically homogeneous in the country, with 99.6% of the population recording themselves in the 2001 census as "White". It was also the smallest district in England with borough status, and the third-least densely populated local government district (after Eden and Tynedale). Its main town is Berwick-upon-Tweed, sited immediately to the north of the Tweed estuary. The
Maine people per square mile, making it the least densely populated state in New England, the American northeast, the eastern seaboard, of all of the states with an Atlantic coastline and of all of the states east of the Mississippi River. The mean population center of Maine is located in Kennebec County, just east of Augusta. The Greater Portland metropolitan area is the most densely populated with nearly 40% of Maine's population. Portland's estimated population in 2016 was 66,937. As explained in detail under "Geography", there are large tracts of uninhabited land in some remote parts of the interior. Maine has