Port of Spain Port of Spain Port of Spain, officially the City of Port of Spain (also stylized Port-of-Spain), is the capital city of Trinidad and Tobago and the country's second-largest city after San Fernando and the third largest municipality after Chaguanas and San Fernando. The city has a municipal population of 37,074 (2011 census), a metropolitan population of 81,142 (2011 estimate) and a transient daily population of 250,000. It is located on the Gulf of Paria, on the northwest coast of the island of Trinidad and is part of a larger conurbation stretching from Chaguaramas in the west to Arima in the
Port of Spain town's population and its geographical extension westwards. From the small cluster of buildings at the foot of the Laventille Hills, eleven streets were laid out west to the area bounded by the St. Ann's River, thus establishing the grid pattern which has survived in downtown Port of Spain to the present day. Along the sea shore was the Plaza de la Marina (Marine Square), a parade ground. By 1786, the town had a population of about 3,000. Realising that the St. Ann's River, prone to flooding, was impeding the expansion of the town, Chacón had its course diverted in 1787