Mississippi County, Missouri
Voting in Mississippi County, Missouri? Find registration links, ID rules, early and absentee voting options and your sample ballot here. Home to about 11,800 people, Mississippi County ranks 77th 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
Voting is how Mississippi County residents shape the decisions made in their name. The next election for Mississippi County voters is Missouri's state primary on August 8, 2028; local elections can come sooner, so check your local election office. Many Mississippi 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 4,450 ballots were cast in Mississippi County, down about 6% from 4,760 in 2020. With roughly 9,460 adults living in the county, that is around 47% of adult residents, below the statewide rate of about 61%.
That means roughly 5,010 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, Mississippi County would add about 251 voices, more than enough to decide a close local race.
Mississippi County is rural, with about 29 people per square mile across 412 square miles, so every vote carries extra weight in local races. The county is home to about 0.2% of Missouri's population.
ZIP codes in or partly in Mississippi County include 63801, 63820, 63823, 63834, 63845, 63881 and 63882. 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 Mississippi County to do the same.
Voter Assistance Resources
Who runs elections in Mississippi 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 Mississippi 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 Mississippi 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 Mississippi 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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