Living in Hilmar-Irwin, CA: what to set up and who to call
Hilmar County Water District reported 14 health-based violations to EPA in the last five years: nitrate ×14. 80% of systems its size reported none. Hilmar-Irwin has no town government of its own, so Merced County runs its elections and most services, and its children attend Hilmar Unified School District.
I’m new in town
What to set up in Hilmar-Irwin, 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 Hilmar-Irwin.
Power comes from Turlock Irrigation District
Turlock Irrigation District (Turlock Irrigation District), a political subdivision utility, serves all of Hilmar-Irwin. Its homes paid an average of 17.4¢ per kWh in 2025, about $142 a month (its average across California).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Hilmar County Water District
Hilmar County Water District supplies Hilmar-Irwin: about 97% of residents live in its service area. About 3% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 5,504 people in all.
14 health-based violations reported to EPA in the five years to October 2026: nitrate ×14, the latest beginning Nov 2025. 80% of the 5,012 systems serving 3,301–10,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. CA2410012.
7 home internet providers serve Hilmar-Irwin
98% of 1,905 addresses can get 100/20 Mbps; 3% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 95% | 1,000/35 |
| AT&T | Fixed wireless, DSL, Fiber | 45% | 100/20 |
| unWired Broadband | Fixed wireless | 100% | 400/50 |
| Cal.net | Fixed wireless | 100% | 100/20 |
| Verizon | Fixed wireless | 67% | 25/6 |
| T-Mobile | Fixed wireless | 50% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Hilmar-Irwin’s trash rules yet
Pickup rules, the dump and recycling in Hilmar-Irwin.
Where your child goes to school
Public school districts and the school path by grade.
Hilmar-Irwin is in Hilmar Unified School District.
BSchool gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Hilmar-Irwin is unincorporated, so Merced County is the local government.
Election office: FVAP local election office directory, updated Jul 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Hilmar-Irwin is in ZIP code 95324
ZIP codes where Hilmar-Irwin residents live, with the share of the town in each.
| ZIP | Post office name | Share of Hilmar-Irwin | ZIP’s residents in Hilmar-Irwin |
|---|---|---|---|
| 95324 | Hilmar, CA | 100% | 72% |
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 Hilmar-Irwin
Who supplies Hilmar-Irwin’s drinking water, and has it had violations?
Hilmar County Water District (EPA ID CA2410012). It reported 14 health-based violations to EPA in the five years to October 2026: nitrate ×14. 80% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Hilmar-Irwin?
Turlock Irrigation District (Turlock Irrigation District), a political subdivision utility. Its homes paid about 17.4¢ per kWh in 2025 (EIA).
What internet providers serve Hilmar-Irwin?
Spectrum, AT&T, unWired Broadband, Cal.net, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Hilmar-Irwin?
95324. Census 2020 ZIP Code Tabulation Areas.
What school district is Hilmar-Irwin in?
Hilmar Unified School District.
How do I register to vote in Hilmar-Irwin?
In California you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before). Elections here are run by the Merced County Registrar of Voters - Elections. Check your registration at voterstatus.sos.ca.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.