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 and San Fernando, Port of Spain has a cool climate due to elevation and the surrounding Northern Range mountains. In the high, misty valleys and mountains that surround the northern outskirts of the city, temperature inversion is quite frequent and the mountains provide a cooling relief from the sweltering heat below. Blue Basin falls, a popular attraction, is located north in Diego Martin. This is the closest waterfall and is invigorating and refreshing. Immediately north and northwest of Port of Spain lie the suburbs of Cascade, St. Ann's, Maraval and Diego Martin. The last two districts fall outside the municipal