| Northfield - Means of Transportation to Work | FIPS Code=23065 |
| 1970 | 1980 | 1990 | |
| Per Cent of Working Population that Drove Alone to Work | 56.69 | 50.69 | 67.81 |
| Per Cent of Working Population that Carpooled to Work | 18.46 | 25.19 | 11.62 |
| Per Cent of Working Population that Used Public Transportation | 0.43 | 0.56 | 0.00 |
| Per Cent of Working Population that Walked to Work | 21.25 | 22.23 | 13.77 |
| Per Cent of Working Population that Used Other Means to Get to Work | 0.93 | 1.33 | 2.39 |
| Per Cent of Working Population that Worked at Home | 2.23 | 1.79 | 4.41 |