| Student Age Group | Number | Percent |
|---|---|---|
| 18-19 | 414 | 43.40% |
| 20-21 | 367 | 38.47% |
| 22-24 | 118 | 12.37% |
| 35 and over | 20 | 2.10% |
| 25-29 | 16 | 1.68% |
| 30-34 | 5 | 0.52% |
Most The College of Idaho students fall into the 18-19 age-range. Student age diversity is considered below average.