What is your methodology here? Is any metropolitan area within a 150 miles of the center of the main metropolitan area is included, or does the entire other metro area have to be within a 150 mile radius?
I did something similar years ago and posted here, but I think it's been purged long ago.
I wrote a small program to calculate the population within a certain radius of a certain census tract using census area data. I'll see if the code is still somewhere on my harddrive.
EDIT: Ah, found it! I still have the code and my compilation of 2000 census area tract, so if anyone's interested just say so and I can post more results (and the code(C++)+data).
I'll just post the 200km radius (so approximately 125 miles) for NYC, LA, Chicago and Philadelphia.
New York
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Population: 31599054
Land Area: 80386.9 sq km
Population Density: 393.087 people / sq km
Chicago
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Population: 15213265
Land Area: 98752.3 sq km
Population Density: 154.055 people / sq km
Los Angeles
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Population: 19882968
Land Area: 72211.6 sq km
Population Density: 275.343 people / sq km
Philadelphia
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Population: 33775290
Land Area: 86016.9 sq km
Population Density: 392.659 people / sq km
Last edited by Mad_Nick; Jul 19, 2010 at 10:31 PM.
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