| Essex - Means of Transportation to Work | FIPS Code=7030 |
| 1970 | 1980 | 1990 | |
| Per Cent of Working Population that Drove Alone to Work | 68.38 | 64.8 | 80.6 |
| Per Cent of Working Population that Carpooled to Work | 16.57 | 23.22 | 998 |
| Per Cent of Working Population that Used Public Transportation | 10.9 | 1.99 | 3.05 |
| Per Cent of Working Population that Walked to Work | 1.1 | 9.29 | 6.04 |
| Per Cent of Working Population that Used Other Means to Get to Work | 2.69 | 0.82 | 1.51 |
| Per Cent of Working Population that Worked at Home | 0.5 | 2.96 | 1.38 |