| Region 1 | |||||||
| Adult Offenders Incarcerated | |||||||
| Source: Idaho Department of Corrections | |||||||
| Alcohol | Assault | Drug | Murder and Manslaughter | Property | Sex | Total | |
| 1998 | 15 | 45 | 82 | 13 | 109 | 25 | 289 |
| 1999 | 18 | 68 | 135 | 10 | 137 | 32 | 400 |
| 2000 | 22 | 69 | 169 | 7 | 145 | 69 | 481 |
| 2001 | 30 | 59 | 143 | 3 | 129 | 26 | 390 |
| 2002 | 12 | 33 | 89 | 1 | 89 | 14 | 238 |
| 2003 | 11 | 38 | 80 | 4 | 76 | 19 | 228 |