| Region 1 | |||||||||||||
| Population | |||||||||||||
| Source: Population Estimates Program, Population Division, U.S. Census Bureau | |||||||||||||
| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Benewah | 8929 | 8980 | 9088 | 9066 | 9171 | 8995 | 8,993 | 9029 | 8961 | 9,218 | 9,347 | 9,243 | 9,352 |
| Bonner | 33960 | 34729 | 35338 | 36071 | 36835 | 37479 | 38,205 | 39162 | 39872 | 40,908 | 41,275 | 41,050 | 41,168 |
| Boundary | 9770 | 9835 | 9820 | 9977 | 9871 | 9926 | 10,085 | 10173 | 10396 | 10,619 | 10,831 | 10,872 | 10,962 |
| Kootenai | 95505 | 98809 | 101305 | 104807 | 108685 | 112297 | 113,954 | 117481 | 122350 | 127,668 | 131,507 | 134,442 | 137,475 |
| Shoshone | 13972 | 13951 | 13863 | 13654 | 13771 | 13443 | 13,090 | 12993 | 12827 | 13,157 | 13,180 | 12,838 | 12,913 |
| Total | 162136 | 166304 | 169414 | 173575 | 178333 | 182140 | 184327 | 188838 | 194406 | 201570 | 206,140 | 208,445 | 211,870 |