What is the square mile?

Answer 1

A square mile is the area of a square with one mile along each edge. It is equal to 640 acres.

"The square mile" is the nickname given to the City of London (UK) as it is roughly a square mile in size; it has also been given as a nickname of the banking district of London as the major investment banks were sited there.

Answer 2

It's a unit of area, equal to about 2.6 square kilometers.

Answer 3

It is an area of 27,878,400 square feet- 640 acres. It does not have to be square in shape, but is equal to an area 1 mile long and one mile wide.