"At midyear 2019, the highest percentage of confined persons receiving MAT was reported in jails in the Northeast (3%), followed by jails in the Midwest and West (1% each) and jails in the South (0.4%) (table 7). Jails in the South accounted for more than half (53%) of the confined jail population at midyear 2019 but nearly a quarter (24%) of jail inmates receiving MAT (not shown in tables). In comparison, jails in the Northeast accounted for 10% of confined persons but 32% of those receiving MAT (not shown in tables). 

"Jail jurisdictions holding fewer than 50 inmates reported the highest percentage of confined persons at midyear 2019 receiving MAT (2%), while jail jurisdictions in each group holding 50 or more inmates reported fewer than 1%. Fewer than 1% of persons confined in urban and rural jails were receiving MAT at midyear 2019.

"Jails located in states with the highest rates of opioid overdose deaths (24.0 or more per 100,000 U.S. residents ages 15 to 74) reported the highest percentage of confined persons receiving MAT (1.4%). In comparison, jails located in states with the lowest rates of opioid overdose deaths (fewer than 10.0 per 100,000) reported the lowest percentage of confined persons receiving MAT (0.3%). 

"About 5% of persons confined in jails in New Mexico, 4% in New Jersey and Washington, and 3% in New York were receiving MAT for OUD (map 6; appendix table 5). A total of 31 states reported that fewer than 1% of their midyear 2019 confined jail population were receiving MAT, of which 20 states reported fewer than 0.5%."

Source

Laura M. Maruschak, Todd D. Minton, and Zhen Zeng, PhD. Opioid Use Disorder Screening and Treatment in Local Jails, 2019. April, 2023. NCJ305179. US Dept. of Justice, Bureau of Justice Statistics.