Contact Clayton
| Administration | |
| City Clerk, City Manager, Finance, Human Resources | (925) 673-7300 |
| Business Licenses | (925) 673-7300 |
| Community Development | |
| Planning, Building, Housing, Code Enforcement | (925) 673-7300 |
| Engineering | (925) 673-7300 |
| Maintenance and Parks | (925) 673-7327 |
| Police Department (non-emergency) | (925) 673-7350 |
| Other Useful Contacts |