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 | Executive Officer |
| Kyrstle Heaney | LAFCo Administrator/Clerk |
Commissioners
| Name | Seat | Term |
| Heidi Carpenter-Harris, Chair | County Member | Annual Appointment |
| Dan Frasier, Vice-Chair | County Member | Annual Appointment |
| Liam Gogan | County Member | Annual Appointment |
| Ric Leutwyler | Alternate County Member | Annual Appointment |
| Andrew Johnson | Special District Member Trinity PUD | 2020-2024 |
| Joseph Kasper | Special District Member Lewiston CSD | 2022-2026 |
| Todd Corbett | Alternate Special District Member Trinity Life Support CSD | 2022-2026 |
| Anna C. Burke | Public Member | 2021-2025 |
| Jake Grossman-Crist | Public Member | 2023-2027 |
| VACANT | Alternate Public Member | 2023-2027 |