Alameda County, California
Voting in Alameda County, California? Find registration links, ID rules, early and absentee voting options and your sample ballot here. Home to about 1,649,000 people, Alameda County ranks 7th in population among California's 58 counties. In California, each county elections office, often called the registrar of voters, handles registration, mails ballots and publishes the county voter information guide with your sample ballot.
Next Election
March 7, 2028
Voter Portal
Register Online
What's On My Ballot?
ID Requirements
Absentee / Early Voting
Registration Deadline
Register online or by mail at least 15 days before an election; conditional same-day registration is available after the deadline.
Why Voting Matters
Why does voting matter in Alameda County? Because every eligible voter here has exactly the same power at the ballot box: one vote. The next election for Alameda County voters is California's presidential primary on March 7, 2028; local elections can come sooner, so check your local election office. With health care and manufacturing among the county's biggest employers, issues like health care costs are decided by the officials voters choose.
About 670,000 people voted for president in Alameda County in 2024 (down about 13% from 770,000 in 2020). That equals roughly 50% of the county's estimated 1,331,000 adults, close to the statewide rate of about 51%.
That means roughly 661,000 adult residents did not cast a presidential ballot. Some are not eligible, but many are, and that is a lot of untapped power. If just one in 20 of them voted, Alameda County would add about 33,000 voices, more than enough to decide a close local race.
Alameda County packs about 2,237 people into each square mile across 737 square miles, so a single precinct can hold thousands of voters. The county is home to about 4.2% of California's population.
ZIP codes in or partly in Alameda County include 94501, 94502, 94505, 94514, 94536, 94537, 94538 and 94539, plus 61 more. Check that your registration is current, look up your sample ballot, and make a plan to vote. Then ask a friend or family member in Alameda County to do the same.
Voter Assistance Resources
Questions about voting in Alameda County? In California, each county elections office, often called the registrar of voters, handles registration, mails ballots and publishes the county voter information guide with your sample ballot. For registration, polling places, early voting and absentee ballots, contact the Alameda County elections office (registrar of voters).
Statewide directory, California Secretary of State's county elections offices list:
https://www.sos.ca.gov/elections/voting-resources/county-elections-offices
See your sample ballot. California county elections offices (your county mails and posts your sample ballot):
https://www.sos.ca.gov/elections/voting-resources/county-elections-offices
You can also preview a personalized ballot at Vote411.org.
Free, nonpartisan help is available before and on every Election Day: call or text the Election Protection hotline at 866-OUR-VOTE (866-687-8683). Spanish: 888-VE-Y-VOTA (888-839-8682). Asian languages: 888-API-VOTE (888-274-8683).
Voters with disabilities in Alameda County can ask for an accessible voting machine, curbside voting where offered, and help from a person of their choice. If you run into barriers, contact Disability Rights California, California's Protection and Advocacy agency, at (888) 569-7955. VoteRiders (844-338-8743) offers free help with voter ID.
Need a ride? Many local transit agencies and ride services offer free or discounted rides to the polls on Election Day, so check what is available before the next election. See our California voter page for statewide options. Details can change, so confirm with the official election office.
Military and overseas voters can get help from the Federal Voting Assistance Program at 1-800-438-VOTE (8683) or fvap.gov.
Sign up to be an election worker
Election workers (often called poll workers) keep voting running smoothly in Alameda County. Most are paid for their time, get free training, and help their neighbors cast their ballots. You can work a full day, a shorter shift, or help before Election Day. County and municipal election offices recruit and train their own workers, and the EAC's Help America Vote page links to yours. Find out how to sign up:
https://www.eac.gov/help-america-vote
Take the Next Step
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