A mega city may cover one or more metropolitan areas.
New York City
New York has a total population of above 22 million people and an annual population growth of 0.3%. This city is divided into 5 boroughs namely Manhattan, Brooklyn, Queens, The Bronx and Staten Island. The city covers an area of 6,720 square miles with a population density of 26403 persons per square mile. New York was the capital of the United States between 1785 and 1790 and it has been the largest city in USA since then. The city is an important entertainment, financial and educational centre. It is home to Wall Street, the New York stock exchange, Columbia University, New York University and Rockefeller University.
Los Angeles
This is the second most populous city in the USA. It has a population of 17.8 million people and an annual; population growth of 1.10%. Just like New York this county is multicultural. It covers a land area of 4850 square miles. It has a population density of 8205 per square mile. This city was founded by Felipe de Neve, a Spanish Governor in 1781. In 1848 when the Mexican –American war ended, it was purchased in a Treaty and became part of the United States. It is the third largest economic center in the world and is home to Hollywood, the Entertainment capital of the world. It is also home to the University of South California and the University of California, Los Angeles.
Chicago, Illinois
It is the third most populous city in the USA with a population of about 2.85 Million people and a population density of 12,750 per square mile. The city was founded in 1833 and is a major center for industry, telecommunications and infrastructure. It is home to the second busiest airport in the world, the O’Hare International Airport.
Dallas, Texas
This area basically covers 12 counties, an area of 9286 square miles. It has a population of over 6.8 million people. This city was founded in 1841 but only formally incorporated in 1856. It is home to Dallas/Fort Worth International Airport one of the world’s largest.
Philadelphia
This area is also known as Delaware valley and has a population of 6 million. It covers a total area of 5118 square miles. The cities population density is 11223.6 per square mile. It was created by the act of consolidation in 1854.


