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 to its western suburbs, was constructed at the same time. These reclaimed lands were originally called Docksite, and were home to US forces during World War II; later a number of government buildings were constructed here. Port of Spain continued to grow in size and importance during the 19th and early 20th centuries, peaking in size in the 1960s at about 100,000 people. Since then the population within the city limits has declined in size as the downtown area has become increasingly commercial and the suburbs in the valleys north, west, and north-east of the city have grown. Today Port