Living in Northfield, KY: what to set up and who to call
The closest public drop-off to Northfield is East District Public Works, 1 mile out; the town decides whether residents may use it. Fiber reaches 95% of addresses in Northfield.
I’m new in town
What to set up in Northfield, 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 Northfield.
Power comes from LG&E
LG&E (Louisville Gas & Electric Co.), an investor-owned utility, serves all of Northfield. Its homes paid an average of 12.4¢ per kWh in 2025, about $116 a month (its average across Kentucky).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Louisville Water Company
Louisville Water Company supplies almost all of Northfield. It draws surface water and serves 806,997 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 93% of the 42 systems serving 500,001–1,000,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 1.1 ppb, below the 15 ppb action level that applied. That’s lower than 62% 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. KY0560258.
4 home internet providers serve Northfield
97% of 308 addresses can get 100/20 Mbps; 95% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| AT&T | Fiber, DSL, Fixed wireless | 100% | 5,000/5,000 |
| Spectrum | Cable, Fiber | 97% | 1,000/1,000 |
| Verizon | Fixed wireless | 97% | 300/20 |
| T-Mobile | Fixed wireless | 95% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
The nearest public drop-off is 1 miles away
Pickup rules, the dump and recycling in Northfield.
East District Public Works
· run by Louisville Metro Public Works
This isn’t Northfield’s own facility. Whether Northfield residents may use it is the town’s rule: check the town’s office.
OpenStreetMap, as of Oct 9, 2026. © OpenStreetMap contributors.
Where your child goes to school
Public school districts and the school path by grade.
Northfield is in Jefferson County School District.
DSchool 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 Mar 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Northfield is in ZIP code 40222
ZIP codes where Northfield residents live, with the share of the town in each.
| ZIP | Post office name | Share of Northfield | ZIP’s residents in Northfield |
|---|---|---|---|
| 40222 | Louisville, KY | 100% | 5% |
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 Northfield
Who supplies Northfield’s drinking water, and has it had violations?
Louisville Water Company (EPA ID KY0560258). It reported no health-based violations to EPA in the five years to October 2026; 93% of systems its size had none. Its latest lead 90th percentile was 1.1 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Northfield?
LG&E (Louisville Gas & Electric Co.), an investor-owned utility. Its homes paid about 12.4¢ per kWh in 2025 (EIA).
What internet providers serve Northfield?
AT&T, Spectrum, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Northfield?
40222. Census 2020 ZIP Code Tabulation Areas.
What school district is Northfield in?
Jefferson County School District.
How do I register to vote in Northfield?
In Kentucky 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 Jefferson County Clerk. Check your registration at vrsws.sos.ky.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.