| Clarendon - Means of Transportation to Work | FIPS Code=21025 |
| 1970 | 1980 | 1990 | |
| Per Cent of Working Population that Drove Alone to Work | 51.76 | 66.28 | 79.17 |
| Per Cent of Working Population that Carpooled to Work | 18.84 | 24.35 | 12.33 |
| Per Cent of Working Population that Used Public Transportation | 0.00 | 0.00 | 0.65 |
| Per Cent of Working Population that Walked to Work | 3.37 | 2.80 | 1.75 |
| Per Cent of Working Population that Used Other Means to Get to Work | 13.02 | 1.64 | 0.39 |
| Per Cent of Working Population that Worked at Home | 13.02 | 4.93 | 5.71 |