- County Administrator
- County Landfill
- County Recorder
- Trinity County Animal Control
- Trinity County Bldg Inspector
- Trinity County Coroner
- Trinity County Data Processing
- Trinity County Dept Of Trans
- Trinity County Jury Svc
- Trinity County Marshal
- Trinity County Personnel Ofc
- Trinity County Planning Dept
- Trinity County RC & D
- Trinity County Recorder
- Trinity County Registrar-Voter
- Trinity County Sealer Weights
- Trinity County Veterans Svc
- Trinity County Victim Witness
