This interactive map shows the average number of gun deaths (including suicides, homicides, and accidents) per 100,000 residents, for the years 2004 through 2010, broken down by county:
There are some interesting patterns here. Urban areas generally have fewer gun deaths than rural areas. Except that the border with Mexico, especially in Texas, California (and southern Florida) – prime areas for illegal immigrants and drug smuggling – ironically have very low rates of gun deaths.
Worst areas are the deep south, mountain states (Montana, Idaho, Wyoming, Nevada, southern Utah, Arizona, New Mexico, western Colorado) and the border between Oregon and Northern California (the “State of Jefferson“). Best areas are the rest of California, Washington State (except for the Olympic Penninsula), northern plains states, and the most of the northeast.
You can zoom in to see how your county does.