| State | Number of Students | Percent |
|---|---|---|
| California | 55 | 25.94% |
| Texas | 19 | 8.96% |
| New York | 15 | 7.08% |
| Illinois | 12 | 5.66% |
| Washington | 11 | 5.19% |
| Virginia | 10 | 4.72% |
| Florida | 9 | 4.25% |
| New Jersey | 8 | 3.77% |
| Massachusetts | 7 | 3.30% |
| Maryland | 6 | 2.83% |
| Ohio | 4 | 1.89% |
| Arizona | 4 | 1.89% |
| Georgia | 4 | 1.89% |
| Connecticut | 4 | 1.89% |
| Tennessee | 4 | 1.89% |
| Hawaii | 3 | 1.42% |
| Oregon | 3 | 1.42% |
| Colorado | 2 | 0.94% |
| North Carolina | 2 | 0.94% |
| Pennsylvania | 2 | 0.94% |
| Michigan | 2 | 0.94% |
| New Mexico | 2 | 0.94% |
| Nevada | 2 | 0.94% |
| Alaska | 1 | 0.47% |
| New Hampshire | 1 | 0.47% |
| Nebraska | 1 | 0.47% |
| Mississippi | 1 | 0.47% |
| Rhode Island | 1 | 0.47% |
| South Carolina | 1 | 0.47% |
| Maine | 1 | 0.47% |
| Kansas | 1 | 0.47% |
| Utah | 1 | 0.47% |
| Indiana | 1 | 0.47% |
| Idaho | 1 | 0.47% |
| Wisconsin | 1 | 0.47% |
The majority of the Caltech students who live in the U.S. are from California. Student location diversity is higher than average.