America's Jails Are Its Largest Mental Health Facilities — and Federal Funding Just Got Cut

WASHINGTON — The three largest mental health facilities in the United States are not hospitals. They are the Los Angeles County Jail, Cook County Jail in Chicago, and Rikers Island in New York City. That grim distinction has persisted for more than a decade, and a reduction in key federal funding for jail diversion programs threatens to make it worse.

The Justice and Mental Health Collaboration Program (JMHCP) — the primary federal grant supporting crisis intervention teams, mental health courts, and jail diversion initiatives — was funded at $35 million in fiscal year 2026, a $10 million cut from FY 2025 levels. The reduction comes at a time when an estimated 44 percent of people in local jails have a diagnosed history of mental illness, according to Bureau of Justice Statistics data.

63 Percent Receive No Treatment

The scale of the treatment gap behind bars is staggering. According to federal data, 63 percent of incarcerated people with mental health conditions receive no treatment while in custody. Only 38 percent receive prescription medication, and even fewer receive counseling or a combination of medication and therapy.

The consequences extend far beyond the jail walls. People released from custody without adequate mental health treatment and continuity of care are significantly more likely to experience homelessness, psychiatric hospitalization, and re-arrest. Reentry providers in New York City have reported that individuals who receive structured reentry services, including mental health support, are 70 percent less likely to experience homelessness and show a 50 percent reduction in psychiatric hospitalizations post-incarceration.

Crisis Intervention Teams Show Results

One of the most promising approaches to keeping people with mental illness out of jail in the first place — crisis intervention teams and mobile crisis response units — depends heavily on the kind of federal funding that was just reduced. Programs modeled on the CAHOOTS initiative in Eugene, Oregon, have demonstrated that deploying mental health professionals alongside or instead of police officers to behavioral health-related 911 calls reduces arrests and increases access to medical services.

New Orleans launched a Mobile Crisis Intervention Unit that in its first year responded to nearly 30 percent of all behavioral health-related 911 calls, diverting individuals to treatment rather than jail. But scaling such programs requires sustained funding that many cities and counties cannot provide from local budgets alone.

Jails Are Not Designed for This

Correctional experts and mental health professionals emphasize that jails are fundamentally unsuited to provide psychiatric care. The environmental stressors of incarceration — noise, isolation, violence, loss of autonomy — exacerbate existing mental health conditions and can trigger psychiatric crises in people who were previously stable.

Solitary confinement, still widely used in American jails despite growing evidence of its psychological harm, is particularly damaging for people with mental illness. The National Alliance on Mental Illness has called for an end to the use of solitary confinement for anyone with a serious mental health condition, a position supported by the American Psychiatric Association and other medical organizations.

State-Level Innovations

Several states have moved to address the crisis through legislation and program development. Florida has established a model process for misdemeanor mental health diversion programs, and Texas funds jail diversion services through its Health and Human Services Commission. Virginia operates a statewide network of crisis intervention teams coordinated with community mental health services.

But advocates warn that without sustained federal investment, these efforts will remain patchwork and inadequate to the scale of the problem. Mental Health America has called for a comprehensive national strategy that treats mental health diversion not as a criminal justice program but as a public health imperative.

The $10 million JMHCP funding cut will take effect in the current fiscal year, with grant recipients expected to begin feeling the impact by summer 2026.

For more coverage, visit Jail411 Analysis.