San Joaquin County.
A Place To Thrive.
San Joaquin County Government is an inventive partner who works on behalf of…
Economic Development
San Joaquin County Government is an inventive partner who works on behalf of business, non-profits, and prospective investors seeking growth, to find answers, connect people and quickly facilitate transactions with the objective of advancing enterprise in throughout the County.
Strategic Priorities
San Joaquin County measures our success by the prosperity of our communities. We keep our focus firmly on ensuring that our County’s priorities – fiscal responsibility, good governance, public safety, economic growth, and managing and preserving our water resources – guide our investments, actions, innovation and service.
Emergency Preparation
SJReady is a community notification system to alert residents about emergency events and other important public safety information. This system allows San Joaquin County to provide you with critical information quickly in a variety of situations such as severe weather, unexpected road closures, and evacuations of neighborhoods and buildings.
Mario Gardea
Supervisor — District 1
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Paul Canepa
Supervisor — District 2
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Sonny Dhaliwal
Supervisor — District 3
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Steven J. Ding
Supervisor — District 4
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Robert Rickman
Supervisor — District 5
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County News
June 15, 2026
San Joaquin County Public Health Services Issues Guidance to Protect Residents During Ash and Debris Cleanup After Promontory/Medline Fire

s recovery efforts continue following the Promontory/Medline Fire, community members are urged to take precautions when cleaning ash and fire debris. The fire created a debris field covering approximately six (6) square miles. Ash from burned structures may contain hazardous materials, including chemicals, metals, and fine particulate matter that can irritate the skin, eyes, and lungs.

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  • June 11, 2026
    County Urges Residents To Take Precautions As Medline Fire Continues To Produce Smoke
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  • June 8, 2026
    San Joaquin County Nears Completion of Ballot Counting in Record Time
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  • June 3, 2026
    San Joaquin County Releases 2026-2027 Proposed Budget
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Our
History
Established in 1850, San Joaquin County is composed of 25 departments and agencies that provide a full range of services to more than 779,000 residents. Encompassing an area of 1,426 square miles, including 35 square miles of water and waterways, with seven cities — Escalon, Lathrop, Lodi, Manteca, Ripon, Stockton, and Tracy — San Joaquin County has a long history of providing responsive public service and innovative programs while operating under sound fiscal principles. Working together, an elected Board of Supervisors and County staff strive to represent, and support and protect the individuals, families, businesses, and natural resources that make our County a great place to live, work and play.