Maricopa County, Arizona
Your guide to voting in Maricopa County, Arizona: registration, sample ballots, ID requirements and where to get local help. Home to about 4,673,000 people, Maricopa County is the most populous of Arizona's 15 counties. In Arizona, the county recorder handles voter registration and the county elections department runs voting.
Next Election
March 21, 2028
Voter Portal
Register Online
What's On My Ballot?
ID Requirements
Absentee / Early Voting
Registration Deadline
Register at least 29 days before an election.
Why Voting Matters
In Maricopa County, the people who show up to vote decide who represents everyone. The next election for Maricopa County voters is Arizona's presidential preference election on March 21, 2028; local elections can come sooner, so check your local election office. Many Maricopa County jobs are in health care and retail, so decisions about health care costs and local businesses hit close to home.
In the 2024 presidential election, about 2,054,000 ballots were cast in Maricopa County, about the same as the 2,069,000 cast in 2020. With roughly 3,639,000 adults living in the county, that is around 56% of adult residents, close to the statewide rate of about 57%.
Around 1,586,000 adults here did not vote for president. Some aren't eligible, yet the rest are untapped power: one more voter in every 20 of them would mean about 79,300 extra Maricopa County ballots, enough to change the result in many close contests.
Maricopa County covers about 9,199 square miles, with roughly 508 residents per square mile. About 62% of all Arizona residents live here.
ZIP codes in or partly in Maricopa County include 85001, 85002, 85003, 85004, 85005, 85006, 85007 and 85008, plus 185 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 Maricopa County to join you.
Voter Assistance Resources
Who runs elections in Maricopa County? In Arizona, the county recorder handles voter registration and the county elections department runs voting. For registration, polling places, early voting and absentee ballots, contact the Maricopa County recorder and elections department.
Statewide directory, Arizona Secretary of State's county election contact list:
https://azsos.gov/elections/about-elections/county-election-contact-info
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 Maricopa 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 Arizona Center for Disability Law, Arizona's Protection and Advocacy agency, at (602) 274-6287. 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 Arizona 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 Maricopa 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
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