| Idaho State | ||||||||||||
| Population Age by Region, 2000 | ||||||||||||
| Source: U.S. Census Bureau, Census 2000 | ||||||||||||
| 0-9 | 10-14 | 15-19 | 20-24 | 25-34 | 35-44 | 45-54 | 55-59 | 60-64 | 65-74 | 75-84 | 85+ | |
| Region 1 | 24530 | 14169 | 13453 | 9356 | 20575 | 27501 | 27500 | 9934 | 8109 | 12712 | 7789 | 2690 |
| Region 2 | 11756 | 6702 | 8946 | 9447 | 12125 | 14119 | 13714 | 5213 | 4294 | 7180 | 5105 | 1932 |
| Region 3 | 32785 | 15782 | 15391 | 12878 | 25728 | 26690 | 22920 | 8807 | 7141 | 11667 | 8440 | 3068 |
| Region 4 | 52296 | 25864 | 25385 | 25876 | 54531 | 57591 | 46359 | 14639 | 10570 | 16175 | 11247 | 3824 |
| Region 5 | 25104 | 13625 | 13958 | 10127 | 19421 | 23666 | 21158 | 7799 | 6411 | 10736 | 7662 | 2730 |
| Region 6 | 92826 | 13759 | 14701 | 12526 | 18999 | 20933 | 18943 | 6520 | 5401 | 8736 | 5944 | 2050 |
| Region 7 | 26435 | 14707 | 19024 | 13784 | 18054 | 22468 | 19654 | 7112 | 5579 | 8749 | 5702 | 1763 |