In Fall 2012, Gettysburg domestic students come from 36 states and the District of Columbia.
| State | 2010-2011 | 2011-2012 | 2012-2013 |
| California | 32 | 41 | 48 |
| Colorado | 12 | 14 | 13 |
| Connecticut | 230 | 247 | 288 |
| District of Columbia | 7 | 10 | 8 |
| Delaware | 23 | 24 | 16 |
| Florida | 16 | 15 | 17 |
| Illinois | 21 | 16 | 12 |
| Maine | 32 | 28 | 32 |
| Maryland | 306 | 304 | 281 |
| Massachusetts | 186 | 186 | 179 |
| New Hampshire | 30 | 25 | 29 |
| New Jersey | 469 | 479 | 504 |
| New York | 361 | 382 | 371 |
| North Carolina | 20 | 16 | 11 |
| Ohio | 17 | 21 | 23 |
| Pennsylvania | 664 | 688 | 738 |
| Rhode Island | 25 | 25 | 24 |
| Texas | 8 | 11 | 13 |
| Vermont | 19 | 19 | 13 |
| Virginia | 72 | 59 | 62 |
| Other Southeast States | 31 | 29 | 16 |
| Other Western States | 21 | 18 | 16 |
| Other Midwestern States | 24 | 29 | 33 |
| Total US | 2626 | 2686 | 2747 |
| Pennsylvania | 25% | 26% | 27% |
| % out-of-state | 75% | 74% | 73% |