The Commission is composed of county supervisorial members appointed by the Board of Supervisors, and special district members appointed through a special district board nomination and election process, and one public member selected by the other members. Commission members serve four-year terms. There is also one alternate member for each of the four classifications. In addition, the Commission contracts for Executive Officer staffing services to manage the day-to-day operations of the Commission.
Staff
| Colette Santsche, AICP | Executive Officer | |
| Krystle Heaney, AICP | Clerk/Analyst | |
| Amber Chung | Administrator |
Commissioners
| Name | Seat | Term |
| Dan Frasier, Chair | County Member | Annual Appointment |
| Heidi Carpenter-Harris | County Member | Annual Appointment |
| Liam Gogan | County Member | Annual Appointment |
| Jill Cox | Alternate County Member | Annual Appointment |
| Andrew Johnson | Special District Member (Enterprise) Trinity PUD | 2024-2028 |
| Todd Corbett | Special District Member (Non-Enterprise) Trinity Life Support CSD | 2022-2026 |
| VACANT | Alternate Special District Member | 2022-2026 |
| Anna C. Burke | Public Member | 2021-2025 |
| Jake Grossman-Crist | Public Member | 2023-2027 |
| Joseph Kasper | Alternate Public Member | 2023-2027 |