| Region 5 | ||||||||
| Adult IDU Clients by County | ||||||||
| Source: IDHW Client Information System | ||||||||
| 1999-2000 | 2000-2001 | 2001-2002 | 2002-2003 | 2005 | 2006 | 2007 | 2008 | |
| Blaine | 8 | 7 | 5 | 4 | ||||
| Camas | 0 | 1 | 0 | n/a | ||||
| Cassia | 5 | 8 | 12 | 14 | ||||
| Gooding | 7 | 6 | 8 | 9 | ||||
| Jerome | 13 | 16 | 24 | 27 | ||||
| Lincoln | 1 | 1 | 3 | 4 | ||||
| Minidoka | 3 | 6 | 17 | 10 | ||||
| Twin Falls | 39 | 49 | 76 | 60 | ||||
| Total | 76 | 94 | 145 | 128 | 131 | 141 | 285 | 252 |