| | Somerville, MA | Rockville, MD | United States |
| Commute Time | 32 | 33 | 27 |
| space | | | |
| Commute Mode | | | |
| | Somerville, MA | Rockville, MD | United States |
| Auto (alone) | 32.3% | 53.9% | 73.2% |
| Carpool | 5.9% | 6.5% | 8.6% |
| Mass Transit | 25.5% | 14.9% | 4.2% |
| Bicycle | 6.7% | 0.6% | 0.5% |
| Walk | 9.6% | 2.3% | 2.5% |
| Work at Home | 18.8% | 20.2% | 9.7% |
| space1 | | | |
| Commute Time To Work | | | |
| | Somerville, MA | Rockville, MD | United States |
| Commute Less Than 5 min. | 0.8% | 1.2% | 2.9% |
| Commute 6 to 9 min. | 3.1% | 7.2% | 9.5% |
| Commute 10 to 14 min. | 7.1% | 10.3% | 13.2% |
| Commute 15 to 19 min. | 11.0% | 13.1% | 15.2% |
| Commute 20 to 24 min. | 12.1% | 11.3% | 14.3% |
| Commute 25 to 29 min. | 7.4% | 4.9% | 6.7% |
| Commute 30 to 34 min. | 18.6% | 13.5% | 13.7% |
| Commute 35 to 39 min. | 5.8% | 3.1% | 3.1% |
| Commute 40 to 44 min. | 9.0% | 5.9% | 4.0% |
| Commute 45 to 59 min. | 15.6% | 13.2% | 8.2% |
| Commute 60 to 89 min. | 7.8% | 12.9% | 6.2% |
| Commute greater than 90 min. | 1.7% | 3.6% | 2.9% |