Believe it or not, but it looks like Canard is correct. Just check out the following which is on the site of the US Census Bureau -
http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?src=bkmk
The only US city with more than 4 million people, as of the 2010 Census is New York. The next biggest is Los Angeles with a population of 3,792,621.
It is just they have far more cities with populations of over 1 million than we do in Australia.
As someone stated earlier in the thread, they have a different way of calculating the population of their cities. That 3,792,621 in LA is that of the direct city centre, not the immediate suburbs surrounding, when worked out with the suburbs of the city like we do with our Australian totals (Urban total area, 200people per km/2), LA has a population of: Los Angeles, USA (14,900,000).
Source:
http://www.worldatlas.com/citypops.htm
NOTE: Numbers shown include population within the recognised metro area of the city, and they also include people
living in the immediate surrounding area outside of the established border of the city, (the immediate suburbs)
8. New York, USA (20,464,000)
17. Los Angeles, USA (14,900,000)
28. Chicago, USA (9,121,000)
54. Dallas-Fort Worth, USA (5,874,000)
55. San Francisco-San Jose, USA (5,864,000)
57. Miami, USA (5,582,000)
60. Philadelphia, USA (5,474,000)
63. Houston, USA (5,383,000)
72. Atlanta, USA (4,715,000)
74. Washington, D.C., USA (4,679,000)
81. Boston, USA (4,427,000)
89. Phoenix-Mesa, USA (4,076,000)
94. Sydney, Australia (3,785,000)
