Fiscal year unduplicated headcount enrollment
| | 2001-2002 | 2002-2003 | 2003-2004 | 2004-2005 | 2005-2006 | 2006-2007 | 2007-2008 | 2008-2009 |
| Unduplicated Headcount | 24484 | 24825 | 24589 | 24897 | 25082 | 25036 | 24284 | 23807 |
| | | | | | | | | |
| Main Campus Total | 22336 | 22435 | 22107 | 22254 | 22275 | 22268 | 21470 | 20491 |
| Main Campus Undergrad | 17356 | 17226 | 16969 | 17370 | 17623 | 17578 | 17119 | 16230 |
| Main Campus Grad | 4915 | 5136 | 5078 | 4833 | 4609 | 4648 | 4318 | 4228 |
| Main Campus Undergrad/Grad | 65 | 73 | 60 | 51 | 43 | 42 | 33 | 33 |
| | | | | | | | | |
| Firelands Campus Total | 2029 | 2163 | 2320 | 2408 | 2558 | 2530 | 2556 | 3070 |
| Firelands Campus Undergrad | 1941 | 2059 | 2217 | 2305 | 2464 | 2468 | 2498 | 2987 |
| Firelands Campus Grad | 88 | 102 | 103 | 103 | 93 | 62 | 58 | 79 |
| Firelands Campus Undergrad/Grad | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 4 |
| | | | | | | | | |
| Main/Firelands Total | 119 | 227 | 162 | 235 | 249 | 238 | 258 | 246 |
| Main/Firelands Undergrad | 111 | 183 | 149 | 210 | 193 | 197 | 183 | 198 |
| Main/Firelands Grad | 7 | 42 | 13 | 24 | 55 | 41 | 74 | 47 |
| Main/Firelands Undergrad/Grad | 1 | 2 | 0 | 1 | 1 | 0 | 1 | 1 |