It is estimated to be around 22 million.
the estimated population of mexico city for 2011 is 8,857,188
Mexico city
Mexico City is the largest city in North America by population.
Current population for Mexico is of 113,724,226 (July 2011 est.), ranking 11th worldwide.
Mexico City (population: 21,163,226)
Mexico City, with a population of 19,231,829.
112,336,538
mexico city
Los Angeles has a population of 15.25 million while Mexico City has a population of 21.16 million. Mexico City is the largest of both.
Moscow has a population of 10,524,400. New York City has a population of 8,363,710. The State of New Mexico has a population of 1,819,045.
São Paulo is bigger than Mexico City in terms of population. São Paulo is the largest city in Brazil and the largest city proper in the Southern Hemisphere, while Mexico City is the largest city in Mexico.
Yes, Mexico City is a primate city (its the capital of Mexico and it has more than twice the population of Mexico's second largest city, Guadalajara).