Here are the most dangerous 25 metro areas. City data isn't reliable because it doesn't take surrounding areas into account, and in Central Valley cities a lot of times the worst hoods are in county areas:
2007 - Most Dangerous 25:
1 Detroit-Livonia-Dearborn, MI M.D.
2 Memphis, TN-MS-AR
3 Pine Bluff, AR
4 Las Vegas-Paradise, NV
5 Florence, SC
6 Myrtle Beach, SC
7 Flint, MI
8 Stockton, CA
9 Jackson, TN
10 Shreveport-Bossier City, LA
11 Miami-Dade County, FL M.D.
12 Charlotte-Gastonia, NC-SC
13 Hot Springs, AR
14 Saginaw, MI
15 Albuquerque, NM
16 Little Rock, AR
17 Yakima, WA
18 Tucson, AZ
19 Oakland-Fremont, CA M.D.
20 Macon, GA
21 Phoenix-Mesa-Scottsdale, AZ
22 Houston, TX
23 Modesto, CA
24 Sumter, SC
25 Alexandria, LA
http://www.morganquitno.com/cit07pop.htm
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2006 - Most Dangerous 25:
1 Detroit-Livonia-Dearborn, MI M.D.
2 New Orleans, LA
3 Memphis, TN-MS-AR
4 Sumter, SC
5 Miami-Dade County, FL M.D.
6 Stockton, CA
7 Las Vegas-Paradise, NV
8 Florence, SC
9 Hot Springs, AR
10 Myrtle Beach, SC
11 Pine Bluff, AR
12 Flint, MI
13 Saginaw, MI
14 Little Rock, AR
15 Tucson, AZ
16 Modesto, CA
17 Albuquerque, NM
18 Jackson, TN
19 Charlotte-Gastonia-Concord, NC-SC
20 Baltimore-Towson, MD
21 Wichita Falls, TX
22 Houston, TX
23 Phoenix-Mesa-Scottsdale, AZ
24 Tallahassee, FL
25 Los Angeles County, CA M.D.
http://www.morganquitno.com/cit06pop.htm