Buchanan County, Missouri
Everything a Buchanan County, Missouri voter needs in one place: registration, voter ID, absentee and early voting, and your sample ballot. Home to about 83,600 people, Buchanan County ranks 15th 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
In Buchanan County, the people who show up to vote decide who represents everyone. The next election for Buchanan County voters is Missouri's state primary on August 8, 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 Buchanan County families.
About 35,700 people voted for president in Buchanan County in 2024 (down about 2% from 36,600 in 2020). That equals roughly 54% of the county's estimated 65,900 adults, below the statewide rate of about 61%.
That means roughly 30,100 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, Buchanan County would add about 1,510 voices, more than enough to decide a close local race.
Buchanan County covers about 408 square miles, with roughly 205 residents per square mile. The county is home to about 1.3% of Missouri's population.
ZIP codes in or partly in Buchanan County include 64401, 64430, 64436, 64439, 64440, 64443, 64444 and 64448, plus 11 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 Buchanan County to do the same.
Voter Assistance Resources
Local election help in Buchanan 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 Buchanan 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 Buchanan 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 Buchanan 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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