California · data as of October 7, 2026
California addiction treatment deserts
186,064 California residents live 30+ miles from medical detox, 0% of the state. 2 of 58 counties have no treatment program of any kind inside the county line. For methadone the number is 314,802 people (1%).
186,064people 30+ mi from detox
314,802people 30+ mi from methadone
2counties with no program
#43of 51 (#1 = worst detox access)
Longest trips
- The county farthest from detox is Inyo County, about 82 mi from BAART Programs Visalia Inc in Visalia.
- The longest trip to a methadone clinic is from Inyo County: about 82 mi to Visalia, CA.
- 9 of 58 counties are more than 30 miles from medical detox; 12 are more than 30 miles from a methadone clinic.
- 16 counties are more than 15 miles from any listed buprenorphine (Suboxone) provider.
Counties farthest from medical detox
| County | Population | Miles | Nearest detox |
|---|---|---|---|
| Inyo County | 18,485 | 82 mi | BAART Programs Visalia Inc, Visalia CA |
| Mono County | 12,991 | 81 mi | Aegis Treatment Centers LLC, Fresno CA |
| Modoc County | 8,491 | 76 mi | BestCare Treatment Services, Klamath Falls OR |
| Del Norte County | 27,009 | 63 mi | Quartz Valley Indian Reservation, Fort Jones CA |
| Trinity County | 15,642 | 39 mi | Aegis Treatment Centers LLC, Redding CA |
| Sierra County | 3,113 | 36 mi | Reno Behavioral Healthcare Hospital, Reno NV |
| Mariposa County | 17,048 | 33 mi | Aegis Treatment Centers LLC, Merced CA |
| Tehama County | 64,451 | 32 mi | Aegis Treatment Centers LLC, Redding CA |
| Plumas County | 18,834 | 31 mi | Lassen Indian Health Center Behavioral Health Department, Susanville CA |
Counties farthest from a methadone clinic
| County | Population | Miles | Nearest OTP |
|---|---|---|---|
| Inyo County | 18,485 | 82 mi | BAART Programs Visalia Inc, Visalia CA |
| Mono County | 12,991 | 81 mi | Aegis Treatment Centers, LLC, Fresno CA |
| Modoc County | 8,491 | 75 mi | Klamath Basin Behavioral Health, Klamath Falls OR |
| Lassen County | 28,340 | 70 mi | Washoe County Detention Center, Reno NV |
| Del Norte County | 27,009 | 63 mi | Quartz Valley Indian Reservation, Fort Jones CA |
| Plumas County | 18,834 | 53 mi | Aegis Treatment Centers LLC, Grass Valley CA |
| Tuolumne County | 53,893 | 42 mi | Aegis Treatment Centers LLC, Ceres CA |
| Trinity County | 15,642 | 39 mi | Aegis Treatment Centers LLC, Redding CA |
| Calaveras County | 46,505 | 35 mi | Aegis Treatment Centers, LLC, Lodi CA |
| Mariposa County | 17,048 | 33 mi | Aegis Treatment Centers LLC, Merced CA |
| Sierra County | 3,113 | 32 mi | The Life Change Center, Reno NV |
| Tehama County | 64,451 | 32 mi | Aegis Treatment Centers, LLC, Chico CA |
Using these numbers
Free to republish with a link to this page. Download the California county CSV or the full U.S. dataset.
FindRehabMap, "California addiction treatment deserts", 2026. https://findrehabmap.com/california/treatment-deserts/
Want one county on your page? Use the embed card. For a cut by legislative district or a different mileage cutoff, email [email protected].
Method
Program locations: SAMHSA FindTreatment.gov. Population centers (2020) and population estimates (2024): U.S. Census Bureau. Distances are straight-line from each county's population center; real driving distances are longer. See the full methodology.