| Business | Phone |
| Agriculture-Weights & Measures 224 W Winton Ave, Hayward 94544 | (510) 670-5232 |
| Alameda Cnty Marriage Licenses 24405 Amador St, Hayward 94544 | (510) 670-5063 |
| Alameda County Building Insp 399 Elmhurst St, Hayward 94544 | (510) 670-5440 |
| Alameda County Courts 24405 Amador St, Hayward 94544 | (510) 670-5661 |
| Alameda County Family Law 24405 Amador St, Hayward 94544 | (510) 670-6635 |
| Alameda County Juvenile Div 24085 Amador St, Hayward 94544 | (510) 670-5086 |
| Alameda County Marshal's Office 24405 Amador St, Hayward 94544 | (510) 670-5045 |
| Alameda County Planning Dept 399 Elmhurst St, Hayward 94544 | (510) 670-5400 |
| Alameda County Roads Dept 399 Elmhurst St, Hayward 94544 | (510) 670-5480 |
| Alameda County Veterans Svc 24041 Amador St, Hayward 94544 | (510) 670-5169 |
| Alameda Housing & Community 224 W Winton Ave # 108, Hayward 94544 | (510) 670-5404 |
| Alameda Mosquito Abatement 23187 Connecticut St, Hayward 94545 | (510) 783-7744 |
| Alameda Planning Department 399 Elmhurst St, Hayward 94544 | (510) 670-5595 |
| Alameda Training & Employment 24100 Amador St # 3, Hayward 94544 | (510) 670-5700 |
| Alameda Veteran's Memorial 22737 Main St, Hayward 94541 | (510) 582-9757 |
| Alemeda Cnty Commission-Women Hayward 94545 | (510) 259-3868 |
| Employment Services Adm 24100 Amador St # 3, Hayward 94544 | (510) 888-7100 |