Photo: JoeyBLS · Public domainLiving in St. John, IN: what to set up and who to call
St. John spans 4 ZIP codes; 46373 holds the most residents (86%). St. John Branch, at 9450 Wicker Avenue, is the library in town.
I’m new in town
What to set up in St. John, 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 St. John.
Power comes from NIPSCO
NIPSCO (Northern Indiana Public Service Co.), an investor-owned utility, serves all of St. John. Its homes paid an average of 22.1¢ per kWh in 2025, about $148 a month (its average across Indiana).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from St. John Municipal Water Utility
St. John Municipal Water Utility supplies almost all of St. John. It draws ground water (EPA lists Schererville Water Department as seller) and serves 25,700 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 2024–Dec 2026, was 2.9 ppb, below the 15 ppb action level that applied. That’s higher than 78% 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 (EPA’s estimate). Violations are counted by the start of their compliance period. IN5245043.
5 home internet providers serve St. John
100% of 8,698 addresses can get 100/20 Mbps; 45% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable, Fiber | 98% | 2,000/250 |
| AT&T | Fiber, DSL, Fixed wireless | 94% | 5,000/5,000 |
| NITCO | Fixed wireless | 100% | 10/1 |
| Verizon | Fixed wireless | 51% | 300/20 |
| T-Mobile | Fixed wireless | 43% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in St. John depends on your street
Pickup days, the drop-off and recycling in St. John, from the town’s own site.
Your pickup week
- TrashEvery week, on your street’s dayThe town’s pickup map
When a holiday falls on a weekday, pickup slides one day later for the rest of that week.
From stjohnin.gov, the town’s official site, checked Oct 21, 2026; pages dated 2026, 2026-02-05, 2026-04-06, 2026-10-21. 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 St. John (67%) is in Lake Central School Corporation; parts are in Hanover Community School Corporation (30%) and Crown Point Community School Corporation (3%).
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 Jul 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
St. John spans 4 ZIP codes
ZIP codes where St. John residents live, with the share of the town in each.
| ZIP | Post office name | Share of St. John | ZIP’s residents in St. John |
|---|---|---|---|
| 46373 | Saint John, IN | 86% | 97% |
| 46311 | Dyer, IN | 8% | 7% |
| 46307 | Crown Point, IN | 5% | 2% |
| 46303 | Cedar Lake, IN | 1% | 2% |
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 St. John
Who supplies St. John’s drinking water, and has it had violations?
St. John Municipal Water Utility (EPA ID IN5245043). 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 2.9 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in St. John?
NIPSCO (Northern Indiana Public Service Co.), an investor-owned utility. Its homes paid about 22.1¢ per kWh in 2025 (EIA).
What internet providers serve St. John?
Xfinity, AT&T, NITCO, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in St. John?
46373 (86%), 46311 (8%), 46307 (5%), 46303 (1%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is St. John in?
Lake Central School Corporation. Parts of the city are in Hanover Community School Corporation and Crown Point Community School Corporation.
How do I register to vote in St. John?
In Indiana you can register online until 29 days before Election Day, in person until 29 days before Election Day, or by mail (postmarked 29 days before). Elections here are run by the Lake County Board of Elections & Registration. Check your registration at indianavoters.in.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: St. John’s own website (stjohnin.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 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.