Napa County, California
Voting in Napa County, California? Find registration links, ID rules, early and absentee voting options and your sample ballot here. Home to about 133,000 people, Napa County ranks 34th 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
In Napa County, the people who show up to vote decide who represents everyone. The next election for Napa County voters is California's presidential primary on March 7, 2028; local elections can come sooner, so check your local election office. Many Napa County jobs are in restaurants and hospitality and manufacturing, so decisions about tourism and small businesses and manufacturing jobs hit close to home.
About 65,500 people voted for president in Napa County in 2024 (down about 9% from 72,100 in 2020). That equals roughly 61% of the county's estimated 108,000 adults, above the statewide rate of about 51%.
That means roughly 42,200 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, Napa County would add about 2,110 voices, more than enough to decide a close local race.
Napa County covers about 748 square miles, with roughly 177 residents per square mile. The county is home to about 0.3% of California's population.
ZIP codes in or partly in Napa County include 94503, 94508, 94515, 94534, 94558, 94559, 94562 and 94567, plus 8 more. Confirm your registration, read through your sample ballot before Election Day, and choose whether you will vote early, by mail or in person. Invite someone you know in Napa County to join you.
Voter Assistance Resources
Questions about voting in Napa 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 Napa 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.
To ask a question or report a problem at the polls, call or text Election Protection at 866-OUR-VOTE (866-687-8683), a free nonpartisan hotline. For help in Spanish call 888-VE-Y-VOTA (888-839-8682); for Asian languages call 888-API-VOTE (888-274-8683).
Voters with disabilities in Napa 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 Napa 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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