Boston, Massachusetts is at an elevation of 43 m . The city is 89.63 sq mi (232.14 km 2 ) in area . The urban region is 1,770 sq mi (4,600 km 2 ) in area . The land area of the city is 48.42 sq mi (125.41 km 2 ) . The metro region is 4,500 sq mi (11,700 km 2 ) in area . The city water area is 41.21 sq mi (106.73 km 2 )
The area of this city is less than  19 sq mi