Photo: Dennisyerger84 · CC BY-SA 3.0Living in Winfield, IN: what to set up and who to call
Every home in Winfield is in ZIP code 46307. Winfield has its own library, Winfield Branch Library, at 10771 Randolph Street.
I’m new in town
What to set up in Winfield, 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 Winfield.
Power comes from NIPSCO
NIPSCO (Northern Indiana Public Service Co.), an investor-owned utility, serves all of Winfield. 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 Indiana American Water - Northwest
Indiana American Water - Northwest supplies Winfield: about 54% of residents live in its service area. Cuii - Twin Lakes serves another 13%. About 40% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water and serves 210,510 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 86% of the 332 systems serving 100,001–250,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 3.0 ppb, below the 15 ppb action level that applied. The highest in five years was 5.0 ppb. That’s higher than 77% 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. IN5245015.
5 home internet providers serve Winfield
99% of 3,006 addresses can get 100/20 Mbps; 28% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| NITCO | Fixed wireless, DSL, Fiber | 100% | 25/3 |
| Xfinity | Cable | 98% | 2,000/250 |
| AT&T | Fiber, Fixed wireless, DSL | 86% | 5,000/5,000 |
| Verizon | Fixed wireless | 68% | 300/20 |
| T-Mobile | Fixed wireless | 26% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Winfield’s trash rules yet
Pickup rules, the dump and recycling in Winfield.
Where your child goes to school
Public school districts and the school path by grade.
Winfield is in Crown Point Community School Corporation.
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.
Winfield is in ZIP code 46307
ZIP codes where Winfield residents live, with the share of the town in each.
| ZIP | Post office name | Share of Winfield | ZIP’s residents in Winfield |
|---|---|---|---|
| 46307 | Crown Point, IN | 100% | 10% |
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 Winfield
Who supplies Winfield’s drinking water, and has it had violations?
Indiana American Water - Northwest (EPA ID IN5245015). It reported no health-based violations to EPA in the five years to October 2026; 86% of systems its size had none. Its latest lead 90th percentile was 3.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Winfield?
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 Winfield?
NITCO, Xfinity, AT&T, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Winfield?
46307. Census 2020 ZIP Code Tabulation Areas.
What school district is Winfield in?
Crown Point Community School Corporation.
How do I register to vote in Winfield?
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: 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.