The East Coast mostly. But the most dense populated areas would be the Northern East Coast by New York, New Jersey, Pennsylvania, Connecticut, etc.
Sunbelt states
the northeast
The Country of China has had the world's largest population for years. It only follows that a region of that country is probably the one that had the greatest population in '05.
Piedmont
the pacific region
smallest U.S. region in both size and population
In 2010 the US State of Nevada had the highest male population.
about 59.000.000million
Northeast
New York city
New Jersey.
Bob esponja