Port of Spain had a local campus enrollment of 15,571 in academic year 2007/2008. The University of Trinidad and Tobago has several campuses and institutes in the greater Port of Spain area including the research based Natural Gas Institute of the Americas and the Chaguaramas Centre for Maritime Studies. Port of Spain has a population of 18,008 males and 19,066 females, with 5,694 businesses and is home to 12,333 households with an average size of 2.9 according to the 2011 census. The city experienced an average annual growth rate of −2.3% between the censuses of 2000 and 2011 Port of Spain's diverse population
Port of Spain suburbs. In addition to the official population, the adjacent East–West Corridor conurbation has a population close to 600,000 people and the "big city" feel with its suburban car dominated commuting. The corridor is the built-up area of north Trinidad stretching from the capital, Port of Spain, east to Arima. It includes the towns of Barataria, San Juan, St. Joseph, Curepe, St. Augustine, Tunapuna, Tacarigua, Arouca, and Five Rivers, once distinct communities and now districts within a continuous urban area. For the most part it runs along the Eastern Main Road, between the Churchill–Roosevelt Highway and the foothills of the Northern