Port of Spain, also written as Port-of-Spain, is the capital of the Republic of Trinidad and Tobago

Trinidad and Tobago

Trinidad and Tobago officially the Republic of Trinidad and Tobago is an archipelagic state in the southern Caribbean, lying just off the coast of northeastern Venezuela and south of Grenada in the Lesser Antilles...

 and the country's third-largest municipality, after San Fernando

San Fernando, Trinidad and Tobago

The City of San Fernando with a population of 55,419 according to the 2000 census, is the larger of Trinidad and Tobago's two cities and the second largest municipality after Chaguanas. It occupies 18 km² and is located in the southwestern part of the island of Trinidad...

 and Chaguanas

Chaguanas

The Borough of Chaguanas is the largest municipality 2000 census) and fastest-growing town in Trinidad and Tobago. Located in Central Trinidad about south of Port of Spain. It grew in size due to its proximity to the Woodford Lodge sugar refinery. It remained a minor town until the 1980s when it...

. The city has a municipal population of 49,031 (2000 census), a metropolitan population of 128,026 (1990 unofficial estimate) and a transient daily population of 250,000. It is located on the Gulf of Paria

Gulf of Paria

The Gulf of Paria is a shallow inland sea between the island of Trinidad and the east coast of Venezuela. This sheltered body of water is considered to be one of the best natural harbours on the Atlantic coast of the Americas...

, on the northwest coast of the island of Trinidad and is part of a larger conurbation stretching from Chaguanas in the west to Arima in the east with an estimated population of 600,000.

Port of Spain is Trinidad and Tobago's most developed city.