Photo: User:Magicpiano · CC BY-SA 4.0Living in Newmarket, NH: what to set up and who to call
Newmarket has its own drop-off, Newmarket Transfer Station, on 345 Ash Swamp Road. New voters sign up with the town clerk of Newmarket, which runs Newmarket’s elections.
I’m new in town
What to set up in Newmarket, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Newmarket.
Power comes from Eversource
Eversource (Public Service Co. of New Hampshire), an investor-owned utility, serves all of Newmarket. 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.
Water comes from Newmarket Water Works
Newmarket Water Works supplies Newmarket: about 81% of residents live in its service area. About 15% 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 5,030 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2024, was 2.0 ppb, below the 15 ppb action level that applied. That’s higher than 67% of similar systems’ latest results.
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. NH1731010.
5 home internet providers serve Newmarket
100% of 2,432 addresses can get 100/20 Mbps; 82% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 99% | 2,000/250 |
| Fidium Fiber | Fiber | 89% | 2,000/2,000 |
| Consolidated Communications | DSL | 2% | 60/10 |
| T-Mobile | Fixed wireless | 46% | 100/20 |
| AT&T | Fixed wireless | 35% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Newmarket depends on your street
Pickup days, the drop-off and recycling in Newmarket, from the town’s own site.
Your pickup week
- TrashEvery week, on your street’s dayLook up your day on newmarketnh.gov
Newmarket Transfer Station
345 Ash Swamp Road, Newmarket, NH
We couldn’t find its opening hours.
Single-stream recycling
All your recyclables go in one bin, no sorting.
- ANY plastic items marked with recycle numbers 1 through 7
- Foil
- Pots and pans
- Empty aerosol cans
- Jars, bottles, and cans
From newmarketnh.gov, the town’s official site, checked Oct 21, 2026; pages dated October 17, 1992. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Newmarket is in Newmarket School District.
BSchool gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
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.
Newmarket is in ZIP code 03857
ZIP codes where Newmarket residents live, with the share of the town in each.
| ZIP | Post office name | Share of Newmarket | ZIP’s residents in Newmarket |
|---|---|---|---|
| 03857 | Newmarket, NH | 100% | 100% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Newmarket
Who supplies Newmarket’s drinking water, and has it had violations?
Newmarket Water Works (EPA ID NH1731010). It reported no health-based violations to EPA in the five years to October 2026; 80% of systems its size had none. Its latest lead 90th percentile was 2.0 ppb (Jan–Jun 2024), against a 15 ppb action level.
Who provides electricity in Newmarket?
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 Newmarket?
Xfinity, Fidium Fiber, Consolidated Communications, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Newmarket?
03857. Census 2020 ZIP Code Tabulation Areas.
What school district is Newmarket in?
Newmarket School District.
How do I register to vote in Newmarket?
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 Newmarket. 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: Newmarket’s own website (newmarketnh.gov), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.