| Region 5 % Growth/Reduction in Population | ||||||||||
| Source: Population Estimates Program, Population Division, U.S. Census Bureau | ||||||||||
| Last updated: 3/10/09 | ||||||||||
| 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | |
| Blaine | 1.35 | 0.20 | 0.71 | 8.77 | 4.08 | 2.85 | 1.99 | 1.48 | 0.30 | 1.56 |
| Camas | -4.54 | 0.59 | 2.77 | 12.71 | 1.10 | 3.37 | 1.14 | -3.54 | 3.52 | 3.49 |
| Cassia | 0.56 | -0.56 | 1.15 | -0.73 | 0.75 | 0.66 | -0.51 | -1.01 | -0.32 | 0.19 |
| Gooding | 0.35 | 0.64 | 0.62 | 2.91 | 0.37 | 0.70 | 0.15 | 0.11 | 0.80 | -0.40 |
| Jerome | 1.17 | 2.35 | 0.84 | 1.26 | 0.58 | 1.36 | 1.11 | 1.90 | 1.83 | 2.44 |
| Lincoln | 1.00 | -0.45 | 1.59 | 5.07 | 2.13 | 1.78 | 2.64 | 0.12 | 4.82 | -0.51 |
| Minidoka | -0.29 | -1.49 | 0.39 | -0.55 | -2.53 | -1.09 | -0.60 | -0.62 | -1.13 | 0.14 |
| Twin Falls | 1.80 | 1.14 | 1.19 | 2.04 | 0.69 | 1.13 | 2.40 | 1.26 | 2.14 | 3.01 |
| Total | 1.06 | 0.52 | 0.96 | 2.28 | 0.70 | 1.04 | 1.28 | 0.70 | 1.17 | 1.73 |