| Business | Phone |
| Contra Costa District Attorney 725 Court St, Martinez 94553 | (925) 646-4500 |
| Contra Costa Public Defender 800 Ferry St, Martinez 94553 | (925) 335-8000 |
| Contra Costa County Dist Atty 1111 Ward St # 301, Martinez 94553 | (925) 646-4770 |
| Contra Costa County Dist Atty 627 Ferry St, Martinez 94553 | (925) 646-4556 |
| Contra Costa County Dist Atty 725 Court St, Martinez 94553 | (925) 957-2200 |