Madison County, Iowa
Everything a Madison County, Iowa voter needs in one place: registration, voter ID, absentee and early voting, and your sample ballot. Home to about 17,200 people, Madison County ranks 41st in population among Iowa's 99 counties. In Iowa, the county auditor is the county's commissioner of elections and handles registration, absentee ballots and polling places.
Next Election
June 6, 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; you can also register in person, including on Election Day.
Why Voting Matters
In Madison County, the people who show up to vote decide who represents everyone. The next election for Madison County voters is Iowa's primary election on June 6, 2028; local elections can come sooner, so check your local election office. Local work in retail and health care means debates over local businesses directly affect Madison County families.
In the 2024 presidential election, about 10,000 ballots were cast in Madison County, up about 2% from 9,820 in 2020. With roughly 13,300 adults living in the county, that is around 75% of adult residents, above the statewide rate of about 65%.
Put another way, about 3,280 adults in Madison County sat that election out. Not all of them can vote, but if even 5% of them did, that would be roughly 164 more ballots, often more than the margin in races for local councils, school boards, the legislature or Congress.
Madison County spans about 561 square miles of small towns and countryside, averaging roughly 31 people per square mile. The county is home to about 0.5% of Iowa's population.
ZIP codes in or partly in Madison County include 50033, 50038, 50061, 50069, 50070, 50072, 50149 and 50155, plus 12 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 Madison County to do the same.
Voter Assistance Resources
Questions about voting in Madison County? In Iowa, the county auditor is the county's commissioner of elections and handles registration, absentee ballots and polling places. For registration, polling places, early voting and absentee ballots, contact the Madison County auditor.
Direct link, Iowa Secretary of State county auditor contact page:
https://sos.iowa.gov/elections/auditors/auditor.asp?CountyID=61&btnGo=Go
Statewide directory, Iowa Secretary of State's county auditor list:
https://sos.iowa.gov/elections/voterinformation/index.html
See your sample ballot. Iowa Secretary of State general election page (sample ballots come from your county auditor):
https://sos.iowa.gov/general-election
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 Madison 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 Iowa, Iowa's Protection and Advocacy agency, at (800) 779-2502. 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 Iowa 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 Madison 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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