[mysto]

I'm willing to guess Detroit has the most population decline of any major metropolitan area. I won't bother to look it up, but it loses a chunk of population every year.

You guessed right. You didn't want to look it up, but since I already had the website www.census.gov looked up, here's Detroit's population in...
1990: 1,027,974
2000: 951,270
2003(estimate): 911,402

[AmishDude]

Even Pittsburgh loses population. So does Philly (which is pretty high on the "nastiest cities" list). I am surprised the decline is that small. I expected it to be much more rapid.