Photo: Polygarlic · CC BY-SA 4.0Living in Dix Hills, NY: what to set up and who to call
Dix Hills has no town government of its own, so Suffolk County runs its elections and most services, and its children attend Half Hollow Hills Central School District. Power in Dix Hills comes from PSEG Long Island, a state utility rather than a private company.
I’m new in town
What to set up in Dix Hills, 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 Dix Hills.
Power comes from PSEG Long Island
PSEG Long Island (Long Island Power Authority), a state utility, serves all of Dix Hills. Its homes paid an average of 26.2¢ per kWh in 2025, about $195 a month (its average across New York, for customers on its standard service). New York lets you buy power from another supplier; 0% of PSEG Long Island’s home customers do, and PSEG Long Island still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Dix Hills Water District
Dix Hills Water District supplies Dix Hills: about 88% of residents live in its service area. Suffolk County Water Authority serves another 6%. Greenlawn Water District serves another 5%. It draws ground water and serves 34,522 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2025–Dec 2027, was 1.0 ppb, below the 15 ppb action level that applied. The highest in five years was 2.6 ppb. That’s lower than 59% 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. NY5103276.
3 home internet providers serve Dix Hills
100% of 8,243 addresses can get 100/20 Mbps; 99% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Verizon | Fiber, Fixed wireless | 99% | 2,300/2,300 |
| Optimum | Cable, Fiber | 98% | 8,000/8,000 |
| T-Mobile | Fixed wireless | 68% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Dix Hills’ trash rules yet
Pickup rules, the dump and recycling in Dix Hills.
Where your child goes to school
Public school districts and the school path by grade.
Most of Dix Hills (89%) is in Half Hollow Hills Central School District; parts are in Commack Union Free School District (9%).
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.
No town hall: the county runs things
Dix Hills is unincorporated, so Suffolk County is the local government.
Election office: FVAP local election office directory, updated Sep 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Dix Hills spans 4 ZIP codes
ZIP codes where Dix Hills residents live, with the share of the town in each.
| ZIP | Post office name | Share of Dix Hills | ZIP’s residents in Dix Hills |
|---|---|---|---|
| 11746 | Huntington Station, NY | 95% | 36% |
| 11731 | East Northport, NY | 2% | 2% |
| 11747 | Melville, NY | 1% | 2% |
| 11743 | Huntington, NY | 1% | 1% |
A few homes fall in 11729, 11798.
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 Dix Hills
Who supplies Dix Hills’ drinking water, and has it had violations?
Dix Hills Water District (EPA ID NY5103276). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan 2025–Dec 2027), against a 15 ppb action level.
Who provides electricity in Dix Hills?
PSEG Long Island (Long Island Power Authority), a state utility. Its homes paid about 26.2¢ per kWh in 2025 (EIA).
What internet providers serve Dix Hills?
Verizon, Optimum, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Dix Hills?
11746 (95%), 11731 (2%), 11747 (1%), 11743 (1%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Dix Hills in?
Half Hollow Hills Central School District. Parts of the city are in Commack Union Free School District.
How do I register to vote in Dix Hills?
In New York you can register online until 10 days before Election Day, in person until 10 days before Election Day, or by mail (postmarked 15 days before and received 10 days before). Elections here are run by the Suffolk County Board of Elections. Check your registration at voterlookup.elections.ny.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 Aug 3, 2026 (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.