**Wyoming** has had the highest age-adjusted suicide rate in most recent CDC data — roughly 30 per 100,000 people, more than double the national rate of about 14. Alaska, Montana, New Mexico, Idaho, and South Dakota are consistently clustered right behind it, and the exact ranking shifts year to year because these are small populations where a few dozen deaths can move the rate noticeably.
This cluster is often called the "suicide belt" of the Intermountain West. Researchers generally point to a combination of overlapping factors rather than any single cause:
**Access to lethal means.** Firearm ownership is highest in these states, and firearms are involved in a majority of suicides there. Because suicidal crises are often brief and impulsive, and because firearm attempts are fatal roughly 85–90% of the time versus a few percent for most other methods, the same number of crises produces far more deaths. This is one of the most robust findings in the literature.
**Rural isolation and health care access.** Low population density means fewer mental health providers (many counties have none), long drives to emergency and trauma care, and greater social isolation.
**Cultural norms.** Studies and interviews repeatedly describe a strong ethic of self-reliance and stoicism in the rural West, with stigma around seeking psychological help.
**Occupational and economic factors.** Mining, oil and gas extraction, agriculture, ranching, and construction all have elevated suicide rates nationally, and they dominate employment in these states. Boom-and-bust resource economies add financial instability.
**Demographics.** These states skew toward middle-aged and older white men — the highest-risk group nationally — and have large veteran populations. They also have substantial American Indian and Alaska Native populations, who experience very high rates linked to historical trauma, poverty, and substance use. High rates of alcohol use disorder in the region are another contributor.
**The altitude hypothesis.** A more contested line of research, notably from Perry Renshaw's group at the University of Utah, finds that mean county elevation correlates with suicide rates even after controlling for gun ownership, poverty, and population density. The proposed mechanism is that chronic mild hypoxia impairs brain bioenergetics and serotonin synthesis. It's a genuinely interesting finding but remains debated, since altitude is confounded with many of the cultural and economic variables above.
One methodological caveat worth keeping in mind: all of this is ecological, correlating state-level characteristics with state-level rates, which limits how confidently you can infer individual-level causes.
If this topic is personally relevant to you or someone you know, the 988 Suicide & Crisis Lifeline (call or text 988 in the US) is available around the clock.