Madrid is the most populous city in Spain and the third most populous in Europe. In 2010 Madrid had 3,273,049 inhabitants and 6,458,684 in the metropolitan area.
Chicargo is the third most populous city in the USA
Yes it is Italy's most populous city.
Spain
Jacksonville is the most populous city in Florida.
New Orleans is a city, and it is the most populous city in the state of Louisiana.
The most populous is Toronto, followed by Montreal, then Calgary. Ottawa, the capital, is the fourth most populous.
Chicago is the third most populous city following New York City and Los Angeles. Houston is the fourth most populous city.
Kyiv is the most populous city in all of eastern europe
The most populous city in North America is Mexico City, in Mexico. It has a population of over 21 million people.
The most populous city is Omaha, with a population of 421,570 at the 2012 census.
Barcelona with a population of 1,615,448 as of 2011. Madrid being the first with a population of 3,265,038 as of 2011.