Photo: Beyond My Ken3 · CC BY-SA 4.0Living in Chilmark, MA: what to set up and who to call
Elections in Chilmark are run by Chilmark itself; register with the Chilmark Town Clerk. Two school districts split the grades in Chilmark: Up-Island Region School District and Martha's Vineyard School District.
I’m new in town
What to set up in Chilmark, 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 Chilmark.
Power comes from Eversource
Eversource (NSTAR Electric Co., doing business as Eversource), an investor-owned utility, serves all of Chilmark. Its homes paid an average of 21.5¢ per kWh in 2025, about $102 a month (its average across Massachusetts, for customers on its standard service). Massachusetts lets you buy power from another supplier; 76% of Eversource’s home customers do, and Eversource still delivers it.
Start or move service: nstar.com · (800) 592-2000
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Menemsha Water Company
Menemsha Water Company supplies Chilmark: about 0% of residents live in its service area. About 100% 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 841 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.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2026, was 2.3 ppb, below the 15 ppb action level that applied. The highest in five years was 62.0 ppb. That’s higher than 76% 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. MA4062000.
1 home internet providers serve Chilmark
98% of 1,458 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 98% | 1,200/35 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Chilmark’s trash rules yet
Pickup rules, the dump and recycling in Chilmark.
Where your child goes to school
Public school districts and the school path by grade.
Chilmark is in two districts that split the grades: Up-Island Region School District and Martha's Vineyard 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 Jul 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Chilmark is in ZIP code 02535
ZIP codes where Chilmark residents live, with the share of the town in each.
| ZIP | Post office name | Share of Chilmark | ZIP’s residents in Chilmark |
|---|---|---|---|
| 02535 | Chilmark, MA | 100% | 73% |
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 Chilmark
Who supplies Chilmark’s drinking water, and has it had violations?
Menemsha Water Company (EPA ID MA4062000). 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 2.3 ppb (Jan–Jun 2026), against a 15 ppb action level.
Who provides electricity in Chilmark?
Eversource (NSTAR Electric Co., doing business as Eversource), an investor-owned utility. Its homes paid about 21.5¢ per kWh in 2025 (EIA).
What internet providers serve Chilmark?
Xfinity (FCC, as of December 2025).
What ZIP codes are in Chilmark?
02535. Census 2020 ZIP Code Tabulation Areas.
What school district is Chilmark in?
Up-Island Region School District and Martha's Vineyard School District.
How do I register to vote in Chilmark?
In Massachusetts you can register online until 10 days before Election Day, in person until 10 days before Election Day, or by mail (postmarked 10 days before). Elections here are run by the Chilmark Town Clerk. Check your registration at sec.state.ma.us.
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 18, 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.