Knox County, Illinois
Knox County, Illinois voter information: how to register, check your status, see your sample ballot and contact your local election office. Home to about 48,700 people, Knox County ranks 29th in population among Illinois's 102 counties. In Illinois, elections are run by local election authorities: usually the county clerk, or a board of election commissioners in some cities and counties.
Next Election
March 21, 2028
Voter Portal
Register Online
What's On My Ballot?
ID Requirements
Absentee / Early Voting
Registration Deadline
Register by mail at least 28 days before an election or online until 16 days before; grace-period and same-day registration are also available in person through Election Day.
Why Voting Matters
In Knox County, the people who show up to vote decide who represents everyone. The next election for Knox County voters is Illinois's general primary on March 21, 2028; local elections can come sooner, so check your local election office. With retail and health care among the county's biggest employers, issues like local businesses are decided by the officials voters choose.
About 22,200 people voted for president in Knox County in 2024 (down about 4% from 23,200 in 2020). That equals roughly 56% of the county's estimated 39,500 adults, close to the statewide rate of about 56%.
That means roughly 17,300 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, Knox County would add about 865 voices, more than enough to decide a close local race.
Knox County spans about 716 square miles of small towns and countryside, averaging roughly 68 people per square mile. The county is home to about 0.4% of Illinois's population.
ZIP codes in or partly in Knox County include 61401, 61402, 61410, 61412, 61414, 61423, 61428 and 61430, plus 18 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 Knox County to do the same.
Voter Assistance Resources
Who runs elections in Knox County? In Illinois, elections are run by local election authorities: usually the county clerk, or a board of election commissioners in some cities and counties. For registration, polling places, early voting and absentee ballots, contact the Knox County election authority (county clerk or board of election commissioners).
Statewide directory, Illinois State Board of Elections' election authorities list:
https://www.elections.il.gov/electionoperations/ElectionAuthorities.aspx
See your sample ballot. Illinois election authorities list (your local election authority posts sample ballots):
https://www.elections.il.gov/electionoperations/ElectionAuthorities.aspx
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 Knox 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 Equip for Equality, Illinois's Protection and Advocacy agency, at (800) 537-2632. 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 Illinois 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 Knox 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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