Hillsborough County, New Hampshire
Hillsborough County, New Hampshire voter information: how to register, check your status, see your sample ballot and contact your local election office. Home to about 430,000 people, Hillsborough County is the most populous of New Hampshire's 10 counties. New Hampshire counties do not run elections. Your town or city clerk and supervisors of the checklist handle registration, absentee ballots and polling places.
Next Election
March 14, 2028
Voter Portal
Register Online
What's On My Ballot?
ID Requirements
Absentee / Early Voting
Registration Deadline
Same-day registration is available at the polls on Election Day.
Why Voting Matters
In Hillsborough County, the people who show up to vote decide who represents everyone. The next election for Hillsborough County voters is New Hampshire's presidential primary, set by state law for March 14, 2028 unless the Secretary of State chooses an earlier date; local elections can come sooner, so check your local election office. With health care and retail among the county's biggest employers, issues like health care costs are decided by the officials voters choose.
In the 2024 presidential election, about 233,000 ballots were cast in Hillsborough County, about the same as the 231,000 cast in 2020. With roughly 349,000 adults living in the county, that is around 67% of adult residents, below the statewide rate of about 71%.
That means roughly 116,000 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, Hillsborough County would add about 5,810 voices, more than enough to decide a close local race.
Across about 876 square miles, Hillsborough County averages around 491 people per square mile, mixing neighborhoods, towns and open land. About 31% of all New Hampshire residents live here.
ZIP codes in or partly in Hillsborough County include 03031, 03033, 03043, 03045, 03047, 03048, 03049 and 03051, plus 34 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 Hillsborough County to do the same.
Voter Assistance Resources
Local election help in Hillsborough County: New Hampshire counties do not run elections. Your town or city clerk and supervisors of the checklist handle registration, absentee ballots and polling places. For registration, polling places, early voting and absentee ballots, contact your town or city clerk.
Statewide directory, New Hampshire Secretary of State voter page:
https://www.sos.nh.gov/elections/voters
See your sample ballot. New Hampshire Secretary of State sample ballots:
https://www.sos.nh.gov/elections/sample-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 Hillsborough 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 the Disability Rights Center of New Hampshire, New Hampshire's Protection and Advocacy agency, at (800) 834-1721. 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 New Hampshire 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 Hillsborough 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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