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Illinois Drug & Alcohol Rehab and Detox Centers

  • 515 listed centers
  • 185 cities covered
  • 2026 Illinois Drug & Alcohol Rehab Directory

515 licensed, federally listed drug and alcohol treatment programs across 185 Illinois cities — 76 with medical detox, 93 with inpatient or residential rehab, and 470 offering outpatient care.

Popular Illinois cities

Addiction Treatment Center Capacity in Illinois

Federal data set
Treatment centers
515

Federally listed

Cities covered
185

across Illinois

Medical detox
76

withdrawal management

Inpatient / residential
93

24-hour care

Outpatient programs
470

incl. IOP

Dual diagnosis
340

co-occurring care

Live CDC1,912 drug overdose deaths in Illinois for the 12 months ending April 2026, 17.2% lower than a year earlier. See national and state trends.

How people pay in Illinois

Of the 515 Illinois centers listed, 367 report accepting private health insurance, 289 offer a sliding fee scale, 156 offer payment assistance, and 4 report no charge to the client — as reported to the federal treatment services survey (September 2026). Payment types only; call the center to confirm whether your coverage applies.

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FilterShowing all 515 centers
From our researchSee the full numbers ↓

14.8%

of centers offer detox
U.S. 19.6%

21.26

residential beds per 100k
U.S. 27.0

From our research

Detox Access and Residential Capacity in Illinois

Detox access

76 of 515 federally listed centers in Illinois (14.8%) report offering medically managed withdrawal, below the national share of 19.6% and 31st of 52 states and territories. The median distance from a community with listed treatment to the nearest detox program is 5.5 miles (closer than the 7.9-mile national median). 6 of 183 measured communities are more than 50 miles from the nearest one.

Read the Detox Access Gap report →

Residential capacity

Illinois reports 21.26 residential beds per 100,000 residents (2,702 beds at 82 programs) — fewer than the national rate of about 27.0, ranking 33rd of 50. Reported occupancy was 80.7%, leaving more open space than most states (national average: 85.1%).

Read the Residential Capacity report →

Source: Treatment Locators analysis of federal facility directory and survey data. Figures describe the system as a whole, not any one center — call a center to confirm current services and openings.

State overview

Drug & Alcohol Detox and Rehab in Illinois

If you or someone you love is struggling with drug or alcohol addiction, treatment is available in Illinois. This directory lists 515 licensed, federally listed treatment programs across 185 Illinois cities. Some of these programs focus on alcohol withdrawal, others on opioids, stimulants, or benzodiazepines, and many treat all of them alongside co-occurring mental health conditions.

Care in Illinois spans the full continuum. Of the programs listed here, 76 provide medically supervised detox, 93 offer inpatient or residential rehab, 470 run standard outpatient programs, and 290 run intensive outpatient (IOP) programs. Detox is usually the first step: it stabilizes the body during withdrawal, but it is not a substitute for treatment. Most people move from detox into residential rehab or an outpatient program, where therapy, medication for addiction treatment, and relapse-prevention planning do the longer-term work.

Substance use and mental health problems frequently travel together. 340 Illinois programs in this directory report treating co-occurring disorders such as depression, anxiety, PTSD, or bipolar disorder alongside addiction. Treating both at the same time — rather than one after the other — is the standard recommended by SAMHSA and is a reasonable question to ask any program before admission.

Many Illinois facilities also tailor programming to specific groups. The most commonly reported specialties in the state are adults (441 programs), co-occurring disorders / dual diagnosis (274 programs), and men (273 programs). 135 programs report offering services in Spanish.

Cost is the most common reason people delay treatment. Of the 515 Illinois programs listed here, 367 report accepting private health insurance, 502 accept cash or self-payment, 289 offer a sliding fee scale based on income, and 156 report some form of payment assistance. 4 report providing services at no charge to the client. These figures come from what each facility reported to the federal treatment services survey (September 2026), which records payment types rather than named insurance carriers. Costs and accepted plans are set by each program and change often, so call the facility directly to confirm what it charges and whether your coverage applies.

Learn more: what medical detox involves, levels of addiction care, and withdrawal symptoms and timelines.

Common questions about treatment in Illinois

How many treatment centers are there in Illinois?

This directory lists 515 licensed treatment programs in Illinois, drawn from the federal treatment services record (September 2026). Of those, 76 provide medical detox, 128 offer inpatient rehab or residential treatment and 470 run outpatient treatment.

What is the difference between detox and rehab in Illinois?

Detox manages withdrawal safely and usually lasts a few days to a week; rehab is the treatment that follows, where therapy and medication address the substance use itself. Most people move from detox into inpatient rehab or an outpatient program, and the levels of care guide explains how each step works.

How much does treatment cost in Illinois, and does insurance cover it?

Cost depends on the level of care and how long you stay, and federal parity law requires most plans to cover addiction treatment on the same terms as other medical care. In Illinois, 367 of the 515 listed centers report accepting private health insurance and 289 report a sliding fee scale based on income. The federal record lists payment types rather than named carriers, so call the center to confirm your insurance coverage.

How long does addiction treatment last?

Medical detox typically runs three to seven days, residential treatment commonly runs 30 to 90 days, and outpatient treatment can continue for several months. Research summarized by the National Institute on Drug Abuse finds that staying in treatment for at least 90 days across all settings is associated with better outcomes.

What happens with withdrawal symptoms?

Withdrawal symptoms depend on the substance, how much was used, and for how long, and alcohol and benzodiazepine withdrawal can be medically dangerous without supervision. Our withdrawal timeline page sets out what typically happens day by day, and anyone with a history of seizures or heavy daily drinking should speak to a clinician before stopping.

Can treatment address mental health conditions too?

Yes — programs that treat co-occurring disorders address substance use and conditions such as depression, anxiety or PTSD at the same time, which SAMHSA identifies as the recommended approach. You can filter this directory for dual diagnosis treatment to see which Illinois programs report providing it.

Find Illinois treatment centers by city

All 185 Illinois cities with a listed rehab or detox center.

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