Johnson County, Illinois
Your guide to voting in Johnson County, Illinois: registration, sample ballots, ID requirements and where to get local help. Home to about 13,300 people, Johnson County ranks 79th 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
Why does voting matter in Johnson County? Because every eligible voter here has exactly the same power at the ballot box: one vote. The next election for Johnson County voters is Illinois's general primary on March 21, 2028; local elections can come sooner, so check your local election office. Local work in health care and restaurants and hospitality means debates over health care costs directly affect Johnson County families.
Johnson County voters cast about 6,100 ballots for president in 2024, down about 5% from 6,450 in 2020. Compared with the county's roughly 11,000 adult residents, that works out to about 55%, close to the statewide rate of about 56%.
That means roughly 4,920 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, Johnson County would add about 246 voices, more than enough to decide a close local race.
Johnson County spans about 344 square miles of small towns and countryside, averaging roughly 39 people per square mile. The county is home to about 0.1% of Illinois's population.
ZIP codes in or partly in Johnson County include 62902, 62908, 62909, 62912, 62922, 62923, 62938 and 62939, plus 5 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 Johnson County to join you.
Voter Assistance Resources
Local election help in Johnson 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 Johnson 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 Johnson 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 Johnson 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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