| Region 3 | ||||||||||
| % 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 | |
| Adams | -2.50 | -0.34 | 0.05 | -8.95 | -7.02 | 5.80 | 0.19 | -1.86 | 3.90 | -3.04 |
| Canyon | 3.52 | 3.19 | 3.26 | 5.32 | 5.99 | 3.56 | 4.31 | 4.13 | 3.98 | 5.03 |
| Gem | 2.60 | 2.64 | 1.95 | 0.24 | 1.94 | 0.08 | 1.91 | 1.05 | 1.91 | 1.72 |
| Owyhee | 2.64 | 1.49 | 1.46 | 2.24 | 3.31 | -1.34 | 2.10 | -1.71 | 0.67 | 0.28 |
| Payette | 1.61 | 1.31 | 1.90 | -1.30 | 1.39 | 0.66 | 2.14 | 0.56 | 2.75 | 1.76 |
| Washington | 2.62 | 1.63 | 0.78 | -3.22 | -0.21 | -0.32 | 0.71 | 0.64 | 0.39 | 1.02 |
| Total | 2.99 | 2.67 | 2.69 | 3.33 | 4.53 | 2.59 | 3.63 | 3.01 | 3.40 | 3.97 |