Photo: Kenneth C. Zirkel · CC BY-SA 4.0Living in Smithtown, NY: what to set up and who to call
Power in Smithtown comes from PSEG Long Island, a state utility rather than a private company. Trains stop in Smithtown, at Kings Park.
I’m new in town
What to set up in Smithtown, 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 Smithtown.
Power comes from PSEG Long Island
PSEG Long Island (Long Island Power Authority), a state utility, serves all of Smithtown. 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 Suffolk County Water Authority
Suffolk County Water Authority supplies Smithtown: about 75% of residents live in its service area. Smithtown Water District serves another 16%. St James Water District serves another 9%. It draws ground water and serves 1,100,000 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 82% of the 27 systems serving more than 1,000,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2025–Dec 2027, was 1.2 ppb, below the 15 ppb action level that applied. The highest in five years was 2.3 ppb. That’s lower than 60% 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. NY5110526.
3 home internet providers serve Smithtown
99% of 36,882 addresses can get 100/20 Mbps; 98% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Verizon | Fiber, Fixed wireless | 97% | 2,300/2,300 |
| Optimum | Cable, Fiber | 97% | 8,000/8,000 |
| T-Mobile | Fixed wireless | 46% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Smithtown is Monday, Tuesday, Thursday or Friday, depending on your street
Pickup days, the drop-off and recycling in Smithtown, from the town’s own site.
Your pickup week
- TrashEvery week, on your street’s day (Mon, Tue, Thu or Fri)
- RecyclingEvery week, Wed
- Bulky itemsCall to book
Smithtown Municipal Services Facility (MSF), Town Recycling Center
85 Old Northport Road, Kings Park, NY 11754
- Mon7 am–3:15 pm
- Tue7 am–3:15 pm
- Wed7 am–3:15 pm
- Thu7 am–3:15 pm
- Fri7 am–3:15 pm
- Sat7 am–3:15 pm
Dual-stream recycling
Paper goes out separately from bottles and cans.
- Newspapers
- Magazines
- Junk mail and envelopes
- Corrugated cardboard
- Non-corrugated cardboard
- Glass jars and bottles
- Plastic bottles
- Plastic food containers labeled with recycling symbols #1 and #2
- Metal food cans
- Metal beverage cans
- Aluminum foil
- Aluminum trays
From smithtownny.gov, the town’s official site, checked Oct 21, 2026; pages dated October 08, 2026. 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.
Most of Smithtown (49%) is in Smithtown Central School District; parts are in Kings Park Central School District (21%) and Commack Union Free School District (14%) and Hauppauge Union Free School District (13%).
ASchool 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 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Smithtown spans 7 ZIP codes
ZIP codes where Smithtown residents live, with the share of the town in each.
| ZIP | Post office name | Share of Smithtown | ZIP’s residents in Smithtown |
|---|---|---|---|
| 11787 | Smithtown, NY | 30% | 100% |
| 11725 | Commack, NY | 19% | 77% |
| 11754 | Kings Park, NY | 16% | 100% |
| 11780 | Saint James, NY | 13% | 99% |
| 11767 | Nesconset, NY | 12% | 100% |
| 11788 | Hauppauge, NY | 5% | 37% |
| 11768 | Northport, NY | 3% | 18% |
A few homes fall in 11755, 11779, 11790.
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.
Train: OpenStreetMap (© OpenStreetMap contributors). ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Smithtown
Who supplies Smithtown’s drinking water, and has it had violations?
Suffolk County Water Authority (EPA ID NY5110526). It reported no health-based violations to EPA in the five years to October 2026; 82% of systems its size had none. Its latest lead 90th percentile was 1.2 ppb (Jan 2025–Dec 2027), against a 15 ppb action level.
Who provides electricity in Smithtown?
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 Smithtown?
Verizon, Optimum, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Smithtown?
11787 (30%), 11725 (19%), 11754 (16%), 11780 (13%), 11767 (12%), 11788 (5%), 11768 (3%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Smithtown in?
Smithtown Central School District. Parts of the city are in Kings Park Central School District and Commack Union Free School District and Hauppauge Union Free School District.
How do I register to vote in Smithtown?
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: Smithtown’s own website (smithtownny.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 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.