The Los Angeles area -- often considered sprawling -- is the most densely populated place in the U.S.
The density in Los Angeles is "25 percent higher than that of New York, twice that of Washington and four times that of Atlanta, as measured by residents per square mile of urban land.
...Odd as it may seem, density is the rule, not an exception, in the wide-open spaces of the West. Salt Lake City is more tightly packed than Philadelphia. So is Las Vegas in comparison with Chicago, and Denver compared with Detroit. Ten of the country's 15 most densely populated metro areas are in the West, where residents move to newly developed land at triple the per-acre density of any other part of the country."
Thanks to Chris Steins
FULL STORY: Out West, a Paradox: Densely Packed Sprawl

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