The city water area is 0 km 2  (0 sq mi) . Boston, Massachusetts is at an elevation of 56 ft . The population of the urban region is 2,658,355 . The coordinates of the city are 7°23′47″N 3°55′0″E﻿ / ﻿7.39639°N 3.91667°E . 1,275/km 2  (3,300/sq mi) is the density of inhabitents in  the metro region of Boston, Massachusetts .  The city area code is +55 (41) . Boston, Massachusetts is located in Sanma Province, Vanuatu . The metro region has 2,452,656 population . The postal code of the city is 21500 . The city was incorporated in December 23, 1814 (village) . Rafael Greca (PMN) is the mayor of Boston, Massachusetts . The Boston, Massachusetts citys' lowest elevation is 0 ft . The land area of the city is 1.275 sq mi (3.303 km 2 ) . Boston, Massachusetts is the government of Kamloops City Council . 1,100/sq km  (2,900/sq mi) is the density of residents in Boston, Massachusetts . 957,441 is the population of Boston, Massachusetts . The demonym of the city Boston, Massachusetts is Indorian . The density of  people in  the urban region of Boston, Massachusetts is 8,600/km 2  (22,000/sq mi) . The highest elevation of Boston, Massachusetts is 1,879 m (6,165 ft)
On December 23, 1814 (village) the city was awarded the legal declaration of a municipal charter.