Back

Alameda County

Alameda County's rich diversity in landscape, culture, industry, and ethnicities is one of its key features. Stretching from San Francisco Bay in the west to the East Bay hills and fertile wine country in the east, Alameda County's 738 square miles are home to more than 1.5 million people who live in urban centers (such as Oakland and Berkeley), smaller cities, suburbs, and rural communities.

Cities and Unincorporated Areas

Within its borders, Alameda County has 14 cities and 5 unincorporated areas. List of cities and city websites.

Our History

Alameda County

On March 25, 1853, an Act of Incorporation was signed creating a new county from parts of Contra Costa and Santa Clara Counties and Alameda County was "born." By 1860, there were 465 residents in the county. In the years since then, the County has grown into a rich, diverse population of more than 1.5 million who live and work in the County's urban, suburban, and rural communities.

Sustainability at the County

What began as energy conservation and recycling in the late 1980s with some of the first solar systems in the state has evolved into a broad cross-agency effort to improve quality of life for our residents and preserve our environment for future generations. Environment / Sustainability is integral to the County's Strategic Vision, adopted by the Board of Supervisors in 2008.

Jun 24, 2026
Full time
Juvenile Institutional Officer Associate Alameda County
$36.39 - $43.98 hourly
Alameda County CA
MISSION STATEMENT The mission of the Alameda County Probation Department is to protect the public safety by providing supervision, services, support and opportunities to our clients on behalf of the people of Alameda County through quality supervision, leadership, services and effective partnerships. THE DEPARTMENT The Alameda County Probation Department is an essential element of the County’s system of public protection and human services. The Department’s role is to reduce the impact of crime in the community by providing accurate, comprehensive and timely information and recommendations to the Courts, providing community-based sanctions and treatment for offenders, and working cooperatively with law enforcement agencies and community organizations with similar objectives. The Department provides a wide range of mandated and discretionary investigative, advisory, and supervisory services to adult and juvenile probationers pursuant to State law and the...
Jun 24, 2026
Full time
Juvenile Institutional Officer Alameda COUNTY
$40.09 - $48.64 hourly
Alameda County CA
THIS IS A NEW CONTINUOUS EXAMINATION.   The eligible list resulting from this examination will cancel any existing list and may last approximately one year, but can be extended.  This examination may be reopened as necessary and the names of additional candidates merged onto the existing list according to examination score. Supplemental Questionnaire:  A properly completed Supplemental Questionnaire must be submitted with each application.  Applications and Supplemental Questionnaires must be in the possession of the Human Resource Services Department by 5:00:00 p.m. on the Last Day for Filing. Failure to submit the Application or Supplemental Questionnaire will result in disqualification. Applications and Supplemental Questionnaires will only be accepted on-line. This is a continuous filing exam with filing deadlines on the following dates at 5:00:00 PM: January 31, 2024 March 29, 2024 May 31, 2024 July 31,...
Jun 24, 2026
Full time
Child Welfare Worker II Alameda COUNTY
$105,534 yearly
Alameda County CA
THIS IS AN OPEN CONTINUOUS EXAMINATION.   The eligible list resulting from this examination will cancel any existing list and may last approximately one year, but can be extended.  This examination may be reopened as necessary and the names of additional candidates merged onto the existing list according to examination score. SUPPLEMENTAL QUESTIONNAIRE : A properly completed Supplemental Questionnaire must be submitted with each application. Failure to submit the Application or Supplemental Questionnaire will result in disqualification. Applications and Supplemental Questionnaires must be in the possession of the Human Resource Services Department by 5:00:00 p.m. on the Last Day for Filing. This is a continuous filing exam with filing deadlines on the following dates at 5:00:00 PM: Monday, August 19, 2024 Monday, September 9, 2024 Tuesday, November 19, 2024 (added 8/30/2024 imb) Tuesday, January 21, 2025 (added 1/17/2025)...