Oregon has the highest rate of any mental illness among U.S. states, with an estimated 31.6% of adults affected in 2023–2024—nearly one in three, compared with 23.1% nationally.

Oregon has the highest rate of any mental illness among U.S. states, with an estimated 31.6% of adults affected in 2023–2024—nearly one in three, compared with 23.1% nationally.

This is a significant public-health challenge that demands accessible treatment, effective… pic.twitter.com/SUUuqEzI2j

— Portland Moderate. (@pdxmoderate) October 13, 2026