Sullivan County, Missouri
Sullivan County, Missouri voter information: how to register, check your status, see your sample ballot and contact your local election office. Home to about 5,750 people, Sullivan County ranks 106th 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 Sullivan County residents shape the decisions made in their name. The next election for Sullivan County voters is Missouri's state primary on August 8, 2028; local elections can come sooner, so check your local election office. With manufacturing and health care among the county's biggest employers, issues like manufacturing jobs are decided by the officials voters choose.
About 2,460 people voted for president in Sullivan County in 2024 (about the same as the 2,470 cast in 2020). That equals roughly 54% of the county's estimated 4,530 adults, below the statewide rate of about 61%.
That means roughly 2,070 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, Sullivan County would add about 103 voices, more than enough to decide a close local race.
Sullivan County is rural, with about 8.9 people per square mile across 648 square miles, so every vote carries extra weight in local races.
ZIP codes in or partly in Sullivan County include 63544, 63545, 63556, 63557, 63560, 63565, 63566 and 64630, plus 5 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 Sullivan County to do the same.
Voter Assistance Resources
Local election help in Sullivan 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 Sullivan 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.
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 Sullivan 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 Sullivan 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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