QuickStats: Age-Adjusted Suicide Rates, by State — United States, 2012

In 2012, the overall age-adjusted suicide rate in the United States was 12.6 per 100,000 population. Among states, Wyoming had the highest suicide rate (29.6), followed by Alaska (23.0), Montana (22.6), New Mexico (21.3), and Utah (21.0). The District of Columbia had the lowest suicide rate (5.7), followed by New Jersey (7.4), New York (8.3), Massachusetts (8.7), and Rhode Island (9.5). For 34 states, suicide rates were higher than the overall U.S. rate. In 2012, a total of 40,600 suicides were reported in the United States.

http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6345a10.htm