The Twin Mountain DMV, often called the Twin Mountain substation, is the New Hampshire Division of Motor Vehicles office for Carroll and the surrounding White Mountains towns. It’s at 549 Route 302 West and is open Monday through Friday, 8:00 a.m. to 4:30 p.m. Since November 3, 2025, every NH DMV office has worked by appointment, so book before you go. If you live in Carroll, you can usually register your car at Town Hall without visiting the DMV at all.
Twin Mountain DMV Hours, Address and Contact Details
| Detail | Twin Mountain DMV |
|---|---|
| Address | 549 Route 302 West, Twin Mountain, NH 03595 (get directions) |
| Hours | Monday–Friday, 8:00 a.m.–4:30 p.m. |
| Appointments | Required. Book through Make an Appointment on the NH DMV homepage. |
| Phone | No direct line is published for this office. Call NH DMV customer service at (603) 227-4000, Monday–Friday, 8:00 a.m.–4:30 p.m. |
| Drop box | Yes |
Do You Need an Appointment at the Twin Mountain DMV?
Yes. NH DMV moved all 14 of its offices, including Twin Mountain, to an appointment-based system on November 3, 2025. Knowledge tests and road tests have always required an appointment.
How to Book an Appointment
- Go to the NH DMV homepage.
- Select Make an Appointment.
- Choose Twin Mountain and the service you need, then pick an open time.
Same-Day Appointments and Walk-Ins
NH DMV holds a limited block of same-day appointments each day for urgent transactions. If you arrive without an appointment, staff will help you find one, which may be on another day or at another office.
NH DMV’s hours page still carries older wording about walk-ins. The October 2025 announcement made appointments the rule at every office, so plan to book ahead.
Services Available at the Twin Mountain DMV
Twin Mountain handles most everyday DMV transactions. Here’s what you can and can’t do at this office.
| Service | Available here? | Notes |
|---|---|---|
| Driver licenses, REAL ID and non-driver IDs | Yes | New licenses, renewals and replacements |
| Knowledge and road tests | By appointment only | Road test availability varies by office |
| Vehicle and boat registration | Yes | Start with your town or city clerk first |
| Duplicate title applications | Yes | For other title questions, call the Title Bureau at (603) 227-4150 |
| Walking disability plates and placards | Yes | |
| Your own driving record | Yes | Requests for someone else’s record must go to the Concord headquarters |
| Drop box | Yes | |
| International Registration Plan (IRP) | No | Handled by the IRP office in Concord |
How to Register a Vehicle in Twin Mountain
Registering a vehicle in New Hampshire is a two-part process. You always start with your town or city clerk, who collects the local fees and confirms your residency. The state portion comes second.
Step 1: Start at the Carroll Town Clerk
Twin Mountain is part of the town of Carroll, and Carroll’s Town Clerk is a municipal agent for the state. The clerk issues registrations and renewals for Carroll residents’ vehicles up to 26,000 lbs, so most residents finish the whole process at Town Hall.
Carroll also offers online registration renewals through its E-Reg service. Extra fees apply, and the E-Reg tool can estimate what a renewal or a new registration will cost.
| Detail | Carroll Town Clerk |
|---|---|
| Address | Carroll Town Hall, 92 School Street, Twin Mountain, NH 03595 (mail: PO Box 88) |
| Phone | (603) 846-5494 |
| Fax | (603) 846-5713 |
| [email protected] | |
| Hours | Monday–Thursday, 7:30 a.m.–3:00 p.m. |
Step 2: Complete the State Portion at the DMV, If Needed
You’ll only need the Twin Mountain DMV for registration if:
- your town’s clerk can’t complete the state portion
- you’re registering a boat
- you live in Carroll and your vehicle is over 26,000 lbs
Driver’s Licenses and REAL ID
Renewing Your Driver’s License
About two months before your license expires, NH DMV mails a renewal notice. The notice tells you whether you can renew online. If you can’t, book an appointment at Twin Mountain or another office.
Documents Needed for a REAL ID
Bring documents that prove:
- your identity and lawful presence, such as a U.S. passport or a certified birth certificate
- your Social Security number
- your New Hampshire residency
- each legal name change, such as a marriage certificate for each marriage
The state’s REAL ID site has an online document checker that tells you exactly what to bring.
License and ID Fees
| Item | Fee |
|---|---|
| Driver license (standard) | $50 |
| REAL ID driver license | $60 |
| Non-driver ID card | $10 |
| Duplicate license or ID | $10 |
| Address change reprint | $3 |
Knowledge and Road Tests
NH DMV gives knowledge and road tests by appointment only, and road test availability varies between offices. Request a test through the DMV’s appointment system, and check other offices if Twin Mountain has no openings.
For a road test, bring:
- a vehicle of the right class for your license that’s fully registered, in safe condition and inspected if required
- a properly licensed driver who drives you to and from the test site and stays until your test is finished
Before You Go: Payment and Holiday Closures
Accepted Payment Methods
NH DMV offices accept:
- Visa, MasterCard and Discover cards, plus American Express in person or by phone
- Cash, in person only
- Personal checks, money orders and traveler’s checks made payable to “State of NH – DMV”
The Carroll Town Clerk sets its own payment options, so call (603) 846-5494 before you go.
Holiday Closures
NH DMV offices close on New Hampshire’s paid state holidays:
- New Year’s Day
- Martin Luther King Jr./Civil Rights Day
- Presidents’ Day
- Memorial Day
- Independence Day
- Labor Day
- Veterans Day
- Thanksgiving Day and the day after
- Christmas Day
When a holiday falls on a weekend, the state may observe it on a nearby weekday instead.
Services You Can Complete Online
You can skip the trip for several transactions on the NH DMV website:
- Renew your driver’s license or non-driver ID, if your renewal notice says you’re eligible
- Order a duplicate license or ID
- Pay a ticket or plead not guilty
- Book a DMV appointment
Carroll residents can also renew their registrations online through the town’s E-Reg service.
Other DMV Offices Near Twin Mountain
If Twin Mountain can’t fit you in, these are the closest DMV offices:
- Gorham DMV: 491 Main Street, open Monday–Thursday, 8:00 a.m.–4:30 p.m.
- North Haverhill DMV: 3785 Dartmouth College Highway, limited availability and driver licensing appointments only
- Tamworth DMV: 1864 White Mountain Highway, open Monday–Friday, 8:00 a.m.–4:30 p.m.
- Colebrook DMV: 17 Bridge Street (Town Hall), limited availability and driver licensing appointments only
For every location in the state, see our list of New Hampshire DMV offices.
Frequently Asked Questions
Yes. NH DMV lists the Twin Mountain office as open Monday through Friday, 8:00 a.m. to 4:30 p.m. You’ll still need an appointment.
Not reliably. All NH DMV offices have been appointment-based since November 3, 2025. A limited number of same-day slots is held each day for urgent transactions, and staff will help walk-in customers find an appointment.
Usually not. Carroll’s Town Clerk is a municipal agent for the state and issues registrations and renewals up to 26,000 lbs for Carroll residents, so you can typically complete everything at Town Hall.
NH DMV doesn’t publish a direct number for the Twin Mountain office. Call customer service at (603) 227-4000, driver licensing at (603) 227-4020 or registration at (603) 227-4030, Monday through Friday, 8:00 a.m. to 4:30 p.m.
Road tests are by appointment only, and availability varies by office. Check for test openings at Twin Mountain when you book, and look at other offices if none are available.
A standard license costs $50 and a REAL ID license costs $60. A non-driver ID or a duplicate license costs $10.
Conclusion
The Twin Mountain DMV is open every weekday, but you’ll need an appointment, so book through NH DMV before you make the trip. If you live in Carroll, start at Town Hall: the Town Clerk can usually handle your whole registration, and many renewals can be done online through E-Reg.
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