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Stephanie Moulton-Peters

District 3 Supervisor

Stephanie Moulton-Peters is Marin County Supervisor for District 3, which includes Sausalito, Floating Homes, Marin City, Tam Valley, Almonte, Mill Valley, Alto-Sutton Manor, Strawberry, Tiburon, and Belvedere.

Stephanie is dedicated to transparent, responsive, effective, and inclusive government that serves the needs of all constituents.

Stephanie serves on several local and regional boards including the Metropolitan Transportation Commission (MTC), Bay Conservation and Development Commission (BCDC), Golden Gate Bridge Highway and Transportation District, Transportation Authority of Marin (TAM) of which she is past Chair, and is currently Chair of the Marin County-City Sea Level Rise Collaborative, BayWAVE. She also serves on the Marin Housing Authority, Marin Flood and Water Conservation District, among other commissions, boards and subcommittees.

Prior to being elected Supervisor, Stephanie served three terms on the Mill Valley City Council and as Mayor in 2010, 2014 and 2018. She worked at PG&E Company managing environmental regulatory compliance for air, water, and toxic substances and climate change programs.

Moulton-Peters is a graduate of Stanford University’s Program in Human Biology with concentration in environmental policy. In Summer 2022, she completed the Harvard Kennedy School Program for Senior Executives in Local and State Government. Stephanie and her husband live in Mill Valley and have two adult sons.


Page updated January 23, 2024