| Support Service | Number in County |
|---|---|
| Excavating Contractors | 5 |
| Building Contractors | 27 |
| Mill Supply Houses | 2 |
| Electrical Contractors | 24 |
| Plumbing Contractors | 25 |
| Paving Contractors | 2 |
| Printing Shops | 6 |
| Office Supply Stores | 5 |
| Electrical Supply Shops | 2 |
| Automotive Parts Stores | 12 |
| Petroleum Supply/Bulk Storage Companies | 4 |
| Asphalt Plants | 2 |
| Concrete and Ready Mix Plants | 2 |
| Machine Shops | 3 |