Custer County, Idaho
Custer County, Idaho voter information: how to register, check your status, see your sample ballot and contact your local election office. Home to about 4,600 people, Custer County is one of the least populous of Idaho's 44 counties. In Idaho, the county clerk handles voter registration, absentee ballots and polling places.
Next Election
May 16, 2028
Voter Portal
Register Online
What's On My Ballot?
ID Requirements
Absentee / Early Voting
Registration Deadline
Register online or by mail before the pre-registration deadline for each election; Election Day registration is available in person with ID and proof of residence.
Why Voting Matters
In Custer County, the people who show up to vote decide who represents everyone. The next election for Custer County voters is Idaho's primary election on May 16, 2028; local elections can come sooner, so check your local election office. With retail and restaurants and hospitality among the county's biggest employers, issues like local businesses are decided by the officials voters choose.
Custer County voters cast about 2,650 ballots for president in 2024, down about 3% from 2,740 in 2020. Compared with the county's roughly 3,860 adult residents, that works out to about 69%, above the statewide rate of about 59%.
Put another way, about 1,210 adults in Custer County sat that election out. Not all of them can vote, but if even 5% of them did, that would be roughly 61 more ballots, often more than the margin in races for local councils, school boards, the legislature or Congress.
Custer County is rural, with about 0.9 people per square mile across 4,922 square miles, so every vote carries extra weight in local races. The county is home to about 0.2% of Idaho's population.
ZIP codes in or partly in Custer County include 83226, 83227, 83235, 83251, 83253, 83255 and 83278. 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 Custer County to join you.
Voter Assistance Resources
Local election help in Custer County: In Idaho, the county clerk handles voter registration, absentee ballots and polling places. For registration, polling places, early voting and absentee ballots, contact the Custer County clerk.
Statewide directory, VoteIdaho's Find Your County Clerk page:
https://voteidaho.gov/county-clerk/
See your sample ballot. VoteIdaho's What's On the Ballot page:
https://voteidaho.gov/on-the-ballots/
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 Custer 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 Disability Rights Idaho, Idaho's Protection and Advocacy agency, at (208) 336-5353. 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 Idaho 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 Custer 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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