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Sylvia Arenas

Sylvia Arenas

Supervisor • District 1
District1@bos.sccgov.orgWebsite(408) 299-5010
Term expires: 2027-01-04
Sylvia Arenas is one of Silicon Valley's most dedicated champions for children, families, and working communities — a native San Josean whose entire professional and political career has been guided by a single, consistent mission: making life better for the families and children who call the South Bay home. She assumed office on the Santa Clara County Board of Supervisors on January 2, 2023, representing District 1, with her current term ending January 4, 2027. A proud native of San José and the daughter of immigrant parents, Arenas learned the value of hard work and the importance of serving others from an early age. She was born and raised in San José and later moved to the Evergreen neighborhood, where she and her husband José have raised their two children for over two decades. She earned a Bachelor of Arts in human development with a focus in early childhood development from CSU East Bay, followed by a Master of Public Administration from the University of San Francisco. Her academic foundation shaped a career that began not in politics but in direct service to families. She launched her public service career working for the City of San José through what is now called Project Hope — a Parks, Recreation and Neighborhood Services program that is part of the Mayor's Gang Prevention Task Force. She went on to work for agencies such as FIRST 5 Santa Clara County, a statewide program bringing critical services to young children, and Gardner Health Services, a health center providing services to low-income families. Before reaching the Board of Supervisors, Arenas built her elected record at two levels of local government. In 2014, she was elected to the Evergreen Elementary School District Board of Trustees, where she served until she won the District 8 seat on the San José City Council in 2016. She won reelection to the council outright in the March 2020 primary against Jim Zito. During her six years on the council, she gravitated to issues affecting the everyday lives of San José women and families, and launched the city's Family Friendly Initiative — aimed at increasing access to early education, after-school programs, safe housing, family-friendly public facilities, and paid family leave. She also chaired the city's Neighborhood Services and Education Committee, where she convened joint hearings with the County Board of Supervisors to address the crisis in affordable child care. In the November 2022 general election, Arenas defeated Republican Johnny Khamis to win the District 1 seat on the Santa Clara County Board of Supervisors. The district is a broad one, encompassing communities across East San José, Evergreen, and surrounding areas. Since joining the Board of Supervisors, she has focused on the needs of children across the county, ensuring that equity informs public investments, and working to create systemic changes that level the playing field in the South Bay. Her priorities as supervisor have included expanding renewable energy, improving public safety, and strengthening mental health services for Santa Clara County's homeless population. She has also led the county's advocacy on child care funding, co-leading efforts to secure state investment in universal preschool and local subsidized care for the youngest children. Most recently, she and a coalition of ten other local governments and nonprofits filed a lawsuit against the Trump administration for upending federal grants for permanent housing — a sign of her willingness to use every tool available to protect her constituents from federal policy reversals. She was elected to a second term as Board of Supervisors President by her fellow supervisors, a recognition from colleagues of her steady leadership and collaborative approach. Her career is a testament to the power of rooting public service in lived community experience — from her immigrant family's values to the neighborhoods and families she has served for more than two decades.
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District staff
Patrick McGarrity
Director of Policy and Budget
patrick.mcgarrity@bos.sccgov.org(408) 299-5015
Alicia Fazal
Executive Assistant
alicia.fazal@bos.sccgov.org(408) 299-5013
Mariela Garcia
Senior Policy Aide
mariela.garcia@bos.sccgov.org(408) 299-5016
Victoria Lam
Housing, Land Use, Environment, and Transportation
victoria.lam01@bos.sccgov.org(408) 299-5014
Monica Rodriguez
Policy Aide
monica.rodriguez@bos.sccgov.org(408) 299-6910
Alec Chavez
Policy Fellow
alec.chavez@bos.sccgov.org(408) 299-5017
Adriana Sanchez
Administrative Assistant
adriana.sanchez01@bos.sccgov.org(408) 299-5010 (main line)
Cristian Cornejo
Community Relations Aide
cristian.cornejo@bos.sccgov.org(408) 299-5010 (main line)
David Ngô
Communications & Community Relations Aide
david.ngo@bos.sccgov.org(408) 299-6082
Joseph Farfan
Community Relations Aide
joseph.farfan@bos.sccgov.org(408) 299-6909
Rebecca Hall
Board Aide
rebecca.hall@bos.sccgov.org(408) 299-5019
Ruben Navarro
Community Relations Aide
ruben.navarro@bos.sccgov.org(408) 299-5018
Nancy Lê
Chief of Staff
nancy.l.le@bos.sccgov.org(408) 299-5012
Appointments
Vice Chair
Housing, Land Use, Environment and Transportation Committee
Chair
Children, Seniors and Families Committee (CSFC)
Recent news
Sylvia Arenas leads in Santa Clara County Board of Supervisors sole contested race
Mercury News — Local • 2026-06-03
In Santa Clara County District 1 race, incumbent Sylvia Arenas is on track to hold her seat against challenger Rebecca Munson, according to early returns.
Sylvia Arenas ahead in early results for South County contest
San José Spotlight • 2026-06-03
Early results show District 1 Santa Clara County Supervisor Sylvia Arenas comfortably fending off a challenger to hold onto her agricultural South County seat. As of 10:45 p.m. Tuesday, Arenas is leading with 61.2% of th
Mullin, Hoelter lead D-15 polls
Redwood City Pulse • 2026-06-03
U.S. Rep. Kevin Mullin will likely face off against first-time Republican candidate Charles Hoelter in November to represent California’s Congressional District 15, according to the county’s preliminary polling results.
Mullin, Hoelter lead D-15 polls
The Almanac • 2026-06-03
U.S. Rep. Kevin Mullin will likely face off against first-time Republican candidate Charles Hoelter in November to represent California’s Congressional District 15, according to the county’s preliminary polling results.
Alameda County supervisors approve new term sheet for sale of Oakland Coliseum property
Pleasanton Weekly • 2026-06-01
The Alameda County Board of Supervisors unanimously approved a non-binding term sheet for the sale of the Oakland Coliseum property at a special meeting last week.
County budget proposal tackles $91.4M spending gap without layoffs, major service cuts
Pleasanton Weekly • 2026-05-30
The Alameda County Board of Supervisors was presented with a $6.7 billion budget proposal Thursday that closes an estimated $91.4 million funding gap without layoffs or major reductions in services.
San Mateo County Supervisors Review the Segregationist History of California Constitution Article 34’s Impacts on Housing Acquisition; Will Return in June with Potential 2026 Ballot Language
Coastside Buzz • 2026-05-28
VIDEO. From the San Mateo County Board of Supervisors regular meeting on Tuesday, May 19th, 2026 at 9:00am, as a hybrid meeting with… The post San Mateo County Supervisors Review the Segregationist History of California
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