Photo: JoeyBLS · Public domainLiving in Griffith, IN: what to set up and who to call
Every home in Griffith is in ZIP code 46319. Griffith has its own library, Griffith-Calumet Township Branch, at 1215 East 45th Avenue.
I’m new in town
What to set up in Griffith, 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 Griffith.
Power comes from NIPSCO
NIPSCO (Northern Indiana Public Service Co.), an investor-owned utility, serves all of Griffith. 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 Griffith Water Department
Griffith Water Department supplies Griffith: about 96% of residents live in its service area. It buys treated surface water (EPA lists Hammond Water Works Department as seller) and serves 16,893 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 2021–Dec 2023, was 1.0 ppb, below the 15 ppb action level that applied. That’s lower than 51% 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. IN5245019.
5 home internet providers serve Griffith
100% of 5,513 addresses can get 100/20 Mbps; 58% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| AT&T | DSL, Fiber, Fixed wireless | 95% | 5,000/5,000 |
| Verizon | Fixed wireless | 50% | 300/20 |
| T-Mobile | Fixed wireless | 37% | 100/20 |
| NITCO | Fixed wireless | 11% | 10/1 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Griffith’s trash rules yet
Pickup rules, the dump and recycling in Griffith.
Where your child goes to school
Public school districts and the school path by grade.
Most of Griffith (79%) is in Griffith Public Schools; parts are in Lake Central School Corporation (21%).
A−School 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.
Griffith is in ZIP code 46319
ZIP codes where Griffith residents live, with the share of the town in each.
| ZIP | Post office name | Share of Griffith | ZIP’s residents in Griffith |
|---|---|---|---|
| 46319 | Griffith, IN | 100% | 91% |
A few homes fall in 46408, 46406.
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 Griffith
Who supplies Griffith’s drinking water, and has it had violations?
Griffith Water Department (EPA ID IN5245019). 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 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Griffith?
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 Griffith?
Xfinity, AT&T, Verizon, T-Mobile, NITCO (FCC, as of December 2025).
What ZIP codes are in Griffith?
46319. Census 2020 ZIP Code Tabulation Areas.
What school district is Griffith in?
Griffith Public Schools. Parts of the city are in Lake Central School Corporation.
How do I register to vote in Griffith?
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.