| Region 3 | |||||||
| Adult Primary Drug of Abuse by County | |||||||
| Source: IDHW Client Information System | |||||||
| 2000-2001 | Alcohol | Methamphetamines | Marijuana | Cocaine | Heroin | ||
| Adams | 8 | 2 | 3 | 0 | 0 | ||
| Canyon | 228 | 172 | 99 | 17 | 10 | ||
| Gem | 52 | 19 | 13 | 1 | 0 | ||
| Owyhee | 10 | 4 | 4 | 2 | 0 | ||
| Payette | 55 | 23 | 16 | 0 | 2 | ||
| Washington | 31 | 13 | 9 | 0 | 0 | ||