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State

Mental health treatment centers in Illinois

478 treatment centers. Facilities whose SAMHSA listing includes mental health treatment.

City lists

All 478 in Illinois

Common questions

Mental health treatment centers in Illinois: how many are there?

SAMHSA’s FindTreatment.gov directory lists 478 treatment centers in Illinois that match (60% of the 793 listed in the state). Facilities whose SAMHSA listing includes mental health treatment.

Which cities in Illinois have the most?

Chicago (115), Peoria (8), Elgin (7), Waukegan (7) and Wheaton (7).

Source: SAMHSA, FindTreatment.gov (National Directory of Mental Health and Substance Use Treatment Facilities), retrieved 2026-11-11. SAMHSA publishes no separate release date for this live directory. The directory has no quality ratings, and this list is not a ranking or a recommendation. Methodology