Living in Diablo Grande, CA: what to set up and who to call
Diablo Grande has no town government of its own, so Stanislaus County runs its elections and most services, and its children attend Newman-Crows Landing Unified School District. Tap water in Diablo Grande comes from Western Hills Water District/Diablo Gran, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Diablo Grande, 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 Diablo Grande.
Power comes from Turlock Irrigation District
Turlock Irrigation District (Turlock Irrigation District), a political subdivision utility, serves all of Diablo Grande. 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 Western Hills Water District/Diablo Gran
Western Hills Water District/Diablo Gran supplies almost all of Diablo Grande. It draws surface water and serves 2,000 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–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. CA5010039.
1 home internet providers serve Diablo Grande
99% of 602 addresses can get 100/20 Mbps; 99% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Frontier | Fiber | 99% | 1,000/1,000 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Diablo Grande’s trash rules yet
Pickup rules, the dump and recycling in Diablo Grande.
Where your child goes to school
Public school districts and the school path by grade.
Diablo Grande is in Newman-Crows Landing Unified School District.
B−School 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
Diablo Grande is unincorporated, so Stanislaus County is the local government.
Election office: FVAP local election office directory, updated Jul 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Diablo Grande is in ZIP code 95363
ZIP codes where Diablo Grande residents live, with the share of the town in each.
| ZIP | Post office name | Share of Diablo Grande | ZIP’s residents in Diablo Grande |
|---|---|---|---|
| 95363 | Patterson, CA | 100% | 6% |
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 Diablo Grande
Who supplies Diablo Grande’s drinking water, and has it had violations?
Western Hills Water District/Diablo Gran (EPA ID CA5010039). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan–Dec 2025), against a 15 ppb action level.
Who provides electricity in Diablo Grande?
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 Diablo Grande?
Frontier (FCC, as of December 2025).
What ZIP codes are in Diablo Grande?
95363. Census 2020 ZIP Code Tabulation Areas.
What school district is Diablo Grande in?
Newman-Crows Landing Unified School District.
How do I register to vote in Diablo Grande?
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 Stanislaus County Clerk, Registrar of Voters. 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.