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Twin Mountain NH 10-25-25Photo: Ascended Dreamer · CC BY 4.0
The Carroll handbook

Living in Carroll, NH: what to set up and who to call

Elections in Carroll are run by Carroll itself; register with the town clerk of Carroll. Carroll has a train station, Crawford.

I’m new in town

What to set up in Carroll, and who provides it. Tap an answer for the details and where they come from.

Home services

Power, water and internet

Who to call to start service at a new address in Carroll.

Electricity

Power comes from Eversource

Eversource (Public Service Co. of New Hampshire), an investor-owned utility, serves all of Carroll. Its homes paid an average of 24.2¢ per kWh in 2025, about $150 a month (its average across New Hampshire, for customers on its standard service). New Hampshire lets you buy power from another supplier; 43% of Eversource’s home customers do, and Eversource still delivers it.

Start or move service: eversource.com · (800) 662-7764

Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.

Drinking water · reported to EPA

Water comes from Carroll Water Works

Carroll Water Works supplies Carroll: about 76% of residents live in its service area. Rosebrook Water serves another 12%. About 12% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 875 people in all.

No health-based violations reported to EPA in the five years to October 2026, like 78% of the 5,327 systems serving 501–1,000 people.

Lead, 90th percentile29.0 ppb
015 ppb action level20

The latest lead result on file, the 90th percentile of homes sampled in Jul–Dec 2002, was 29.0 ppb, above the 15 ppb action level that applied. It’s from 2002: EPA has no newer result for this system.

The system’s full record: EPA ECHO report

EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. NH0381010.

Internet

7 home internet providers serve Carroll

88% of 764 addresses can get 100/20 Mbps; 13% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
SpectrumCable, Fiber68%1,000/1,000
Bretton Woods Telephone CompanyFiber20%1,000/1,000
Consolidated CommunicationsDSL8%60/10
NetafyFixed wireless43%150/150
T-MobileFixed wireless12%100/20
VerizonFixed wireless10%300/20

FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.

Trash & recycling

We don’t have Carroll’s trash rules yet

Pickup rules, the dump and recycling in Carroll.

Schools

Where your child goes to school

Public school districts and the school path by grade.

Carroll kids go to
PK–82 schoolsDepends on your address
9–12White Mountains Regional High Schoolin Whitefield

Carroll is in White Mountain Region School District.

Test scores and every school: see Schools →

U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.

Government & voting

Town hall and registering to vote

Who to call, and how to register.

Election office: FVAP local election office directory, updated Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 19, 2024.

ZIP codes & area codes

Carroll spans 2 ZIP codes

ZIP codes where Carroll residents live, with the share of the town in each.

ZIPPost office nameShare of CarrollZIP’s residents in Carroll
03595Twin Mountain, NH87%100%
03575Bretton Woods, NH13%100%
Area code603Wikidata

Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.

Everyday places

Getting around, the ER and the library

One line each; the subject pages have the rest.

Train: OpenStreetMap (© OpenStreetMap contributors). ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.

Questions about living in Carroll

Who supplies Carroll’s drinking water, and has it had violations?

Carroll Water Works (EPA ID NH0381010). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 29.0 ppb (Jul–Dec 2002), against a 15 ppb action level.

Who provides electricity in Carroll?

Eversource (Public Service Co. of New Hampshire), an investor-owned utility. Its homes paid about 24.2¢ per kWh in 2025 (EIA).

What internet providers serve Carroll?

Spectrum, Bretton Woods Telephone Company, Consolidated Communications, Netafy, T-Mobile, Verizon (FCC, as of December 2025).

What ZIP codes are in Carroll?

03595 (87%), 03575 (13%), by share of residents. Census 2020 ZIP Code Tabulation Areas.

What school district is Carroll in?

White Mountain Region School District.

How do I register to vote in Carroll?

New Hampshire has no online registration; you can register in person up to and including Election Day or by mail only in special circumstances (received 13 days before). Elections here are run by the Town Clerk of Carroll. Check your registration at app.sos.nh.gov.

Sources & dates

Every answer above names its source. Here they are with their dates.

  • Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
  • Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
  • Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
  • ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
  • Schools: NCES Common Core of Data, 2024–25.
  • Registration: vote.gov, updated Nov 19, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
  • Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
  • Internet: FCC National Broadband Map, as of December 2025.