| 24-hr Emergency/Non-Emergency | | Police | (925) 371-4987 | |
| Airport | Monday to Thursday, 8:00 a.m. to 4:30 p.m., Friday 8:00 a.m. to 3:00 p.m. | | (925) 960-8220 | Email |
| Animal Control | Monday - Saturday, 7:00 a.m. - 4:00 p.m. | | (925) 371-4987 | |
| Animal Services | | Police | (925) 371-4987 | |
| Baker, Anwan | Library Services Director | Library | (925) 373-5509 | Email |
| Benz, Kellie | Public Works Communications Analyst | Public Works | (925) 960-8010 | Email |
| Brown, Carl | Public Works Director | Public Works | (925) 960-8003 | Email |
| Burch, Marianna | City Manager | City Manager | (925) 960-4040 | Email |
| Calkins, Jason | Public Works Supervisor - Streets / Signals / Facilities | Public Works | (925) 960-8020 | Email |
| Cardwell, Brandon | Innovation & Economic Development Director | Innovation & Economic Development | (925) 960-4147 | Email |
| Chief of Police Office | | Police | (925) 371-4710 | |
| Cilley, Kimberly | City Attorney | City Attorney | (925) 960-4150 | Email |
| City Attorney's Office | Monday to Friday, 8:00 a.m. to 5:00 p.m. | | (925) 960-4150 | |
| City Clerk's Office | Monday to Friday, 8:00 a.m. to 5:00 p.m. | | (925) 960-4200 | Email |
| City Manager's Office | Monday to Friday, 8:00 a.m. to 5:00 p.m. | | (925) 960-4040 | Email |
| Cole, Herbert | Emergency Manager | City Manager | (925) 960-4038 | Email |
| Crime Prevention | | Police | (925) 371-4797 | |
| Criminal Investigations Bureau | | Police | (925) 371-4700 | |
| Dispatch Center | | Police | (925) 371-4987 | |
| Dispatch Supervisor | | Police | (925) 371-4936 | |
| Doyle, David | Accounting Supervisor | | (925) 960-4352 | Email |
| Earl, Frances | Housing & Human Services Manager | Community Development | (925) 960-4580 | Email |
| Engineering | Monday to Thursday, 9:00 a.m. to 4:00 p.m. | | (925) 960-4500 | Email |
| Environmental Services | Monday to Friday, 8:00 a.m. to 5:00 p.m. | | (925) 960-8015 | Email |
| Finance | Monday to Friday, 8:00 a.m. to 5:00 p.m. | | (925) 960-4300 | Email |
| Fire Department, Non-Emergency Line | | | (925) 454-2361 | |
| Gan, Marisa | Management Analyst II | Public Works | (925) 960-8023 | Email |
| Gonzalez, Daniel | Deputy City Attorney | City Attorney | | Email |
| Hilton, Kristen | Human Resources Manager | Administrative Services | (925) 960-4100 | Email |
| Horizons Family Counseling | | Police | (925) 371-4747 | |
