| Region 2 | |||||||||||||
| Population | |||||||||||||
| Source: Population Estimates Program, Population Division, U.S. Census Bureau WA | |||||||||||||
| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Clearwater | 9,437 | 9,404 | 9,347 | 9,359 | 8,930 | 8,544 | 8,446 | 8,401 | 8,393 | 8,373 | 8,324 | 8,231 | 8,176 |
| Idaho | 14,868 | 15,039 | 15,007 | 15,030 | 15,511 | 15,423 | 15,308 | 15,413 | 15,616 | 15,697 | 15,762 | 15,345 | 15,448 |
| Latah | 32,809 | 33,161 | 32,667 | 32,509 | 34,935 | 34,476 | 35,218 | 35,087 | 35,169 | 34,714 | 35,029 | 36,299 | 35,906 |
| Lewis | 4,003 | 4,030 | 3,995 | 3,943 | 3,747 | 3,625 | 3,721 | 3,748 | 3,753 | 3,750 | 3,756 | 3,581 | 3,594 |
| Nez Perce | 36,594 | 36,830 | 36,842 | 36,913 | 37,410 | 37,095 | 37,106 | 37,699 | 37,823 | 37,931 | 38,324 | 38,932 | 38,975 |
| Total | 97,711 | 98,464 | 97,858 | 97,754 | 100,533 | 99,163 | 99,799 | 100,348 | 100,754 | 100,465 | 101,195 | 102,388 | 102,099 |