Marion County, Missouri
Marion County, Missouri voter information: how to register, check your status, see your sample ballot and contact your local election office. Home to about 28,400 people, Marion County ranks 39th in population among Missouri's 115 counties. In Missouri, elections are run by local election authorities: the county clerk in most counties, or a board of election commissioners in several cities and counties.
Next Election
August 8, 2028
Voter Portal
Register Online
What's On My Ballot?
ID Requirements
Absentee / Early Voting
Registration Deadline
Register by the fourth Wednesday before an election.
Why Voting Matters
Every eligible adult in Marion County, Missouri holds the same power on Election Day: one vote that counts exactly as much as anyone else's. The next election for Marion County voters is Missouri's state primary on August 8, 2028; local elections can come sooner, so check your local election office. Many Marion County jobs are in health care and retail, so decisions about health care costs and local businesses hit close to home.
Marion County voters cast about 13,100 ballots for president in 2024, about the same as the 13,300 cast in 2020. Compared with the county's roughly 22,200 adult residents, that works out to about 59%, close to the statewide rate of about 61%.
Around 9,040 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 452 extra Marion County ballots, enough to change the result in many close contests.
With about 65 residents per square mile over 437 square miles, Marion County is a place where neighbors often know their local officials. The county is home to about 0.5% of Missouri's population.
ZIP codes in or partly in Marion County include 63401, 63438, 63439, 63440, 63443, 63454, 63456 and 63461, plus 2 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 Marion County to join you.
Voter Assistance Resources
Who runs elections in Marion County? In Missouri, elections are run by local election authorities: the county clerk in most counties, or a board of election commissioners in several cities and counties. For registration, polling places, early voting and absentee ballots, contact the Marion County local election authority (county clerk or board of election commissioners).
Statewide directory, Missouri Secretary of State elections division:
https://www.sos.mo.gov/elections/
See your sample ballot. Missouri Secretary of State elections division (voter lookup shows sample ballots):
https://www.sos.mo.gov/elections/
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 Marion 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 Missouri Protection & Advocacy, Missouri's Protection and Advocacy agency, at (573) 893-3333. 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 Missouri 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 Marion 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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