Welcome to District 3

District 3 Supervisor Ray Mueller

I am proud to represent the cities of Atherton, southeast Belmont, Half Moon Bay, Menlo Park, Pacifica, Portola Valley, San Carlos, Woodside and the unincorporated areas of Devonshire Canyon, El Granada, Emerald Lake Hills, Kings Mountain, La Honda, Ladera, Loma Mar, Los Trancos Woods, Miramar, Montara, Moss Beach, Palomar Park, Pescadero, Princeton By-The-Sea, San Gregorio, Skyline, Skylonda, Stanford Lands, Vista Verde, and West Menlo Park.

We are working every day to improve the quality of life for all San Mateo Residents. I am honored to serve as your County Supervisor and share my work to protect and improve the quality of life for all San Mateo County residents.

If you would like to contact me or my staff for any reason, please email SMC_SupMueller@smcgov.org and don’t forget to sign up for our newsletter and follow me on Facebook, Instagram, and X  for regular updates. 

We look forward to hearing from you!

Ray Mueller
District 3 Supervisor, County of San Mateo 
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District 3 Office:
400 County Center
Redwood City, CA 94063
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(650) 363 – 4569


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