Because Los Angeles outgrewChicago.
Chicago, Illinois is the third largest city in the United States.
3rd largest city in the US by population
Wrangell, Alaska is the third largest city by land mass in the US.
It is the third largest US City by population.
Chicago whiich is the third largest US city.
it had the best location on the railroad network.
The largest city in the united states Is new york city new york, the second largest city is los angeles california,and the third largest city and best of all is chicago illinois, chicago may only be the third largest, but it has the tallest building in the united states, the sears tower
Chicago. Chicago is the 3rd largest city in the US, just barely behind Los Angeles. Chicago has a city population of 2.8 million, and a metro area of 9.7 million. Houston is the 4th largest city, but it only has a city population of 2.2 million and a metro area of 5.7. This actually makes Houston the 6th largest in metro area. These numbers are from the US census.
Chicago
According to the US Census of 1880, Philadelphia was the second largest US city (by population) at that time. New York was the largest and Brooklyn, NY (considered a separate entity) was ranked third. Chicago was fourth.
Illinois
Illinois is a state which contains cities but lies within a country.