Dubuque County, Iowa
Your guide to voting in Dubuque County, Iowa: registration, sample ballots, ID requirements and where to get local help. Home to about 99,200 people, Dubuque County ranks 9th 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
Why does voting matter in Dubuque County? Because every eligible voter here has exactly the same power at the ballot box: one vote. The next election for Dubuque 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 manufacturing and health care means debates over manufacturing jobs directly affect Dubuque County families.
In the 2024 presidential election, about 52,600 ballots were cast in Dubuque County, down about 3% from 53,900 in 2020. With roughly 77,800 adults living in the county, that is around 68% of adult residents, close to the statewide rate of about 65%.
Put another way, about 25,200 adults in Dubuque County sat that election out. Not all of them can vote, but if even 5% of them did, that would be roughly 1,260 more ballots, often more than the margin in races for local councils, school boards, the legislature or Congress.
Across about 608 square miles, Dubuque County averages around 163 people per square mile, mixing neighborhoods, towns and open land. The county is home to about 3.1% of Iowa's population.
ZIP codes in or partly in Dubuque County include 52001, 52002, 52003, 52004, 52031, 52032, 52033 and 52039, plus 15 more. Take two minutes to confirm your registration, preview your ballot with the links on this page, and decide when and how you will vote. Bring a neighbor along.
Voter Assistance Resources
Questions about voting in Dubuque 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 Dubuque County auditor.
Direct link, Iowa Secretary of State county auditor contact page:
https://sos.iowa.gov/elections/auditors/auditor.asp?CountyID=31&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 Dubuque 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 Dubuque 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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