Photo: Sarah Stierch · CC BY 4.0Living in Isleton, CA: what to set up and who to call
Every home in Isleton is in ZIP code 95641. For an emergency, Sutter Delta Medical Center is the closest ER, 16 miles away.
I’m new in town
What to set up in Isleton, 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 Isleton.
Power comes from PG&E
PG&E (Pacific Gas & Electric Co.), an investor-owned utility, serves all of Isleton. Its homes paid an average of 37.5¢ per kWh in 2025, about $174 a month (its average across California, for customers on its standard service). California lets you buy power from another supplier; 66% of PG&E’s home customers do, and PG&E still delivers it.
Start or move service: pgecorp.com
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Cal Am - Isleton water system
The Cal Am - Isleton water system supplies almost all of Isleton. It draws ground water and serves 1,693 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 2022–Dec 2024, was 2.0 ppb, below the 15 ppb action level that applied. That’s higher than 69% 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. CA3410012.
6 home internet providers serve Isleton
96% of 370 addresses can get 100/20 Mbps; 66% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Frontier | Fiber, DSL | 69% | 7,000/7,000 |
| unWired Broadband | Fixed wireless | 100% | 1,000/1,000 |
| Cal.net | Fixed wireless | 96% | 100/20 |
| DigitalPath | Fixed wireless | 40% | 200/20 |
| Verizon | Fixed wireless | 12% | 300/20 |
| Softcom Internet Communications | Fixed wireless | 4% | 400/50 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Calwaste Recovery Systems picks up trash in Isleton
Pickup days, the drop-off and recycling in Isleton, from the town’s own site.
We couldn’t find pickup days or drop-off hours. Check cityofisleton.com →
From cityofisleton.com, the town’s official site, checked Oct 22, 2026. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Isleton is in River Delta Joint Unified School District.
Test scores and every school: see 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 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Isleton is in ZIP code 95641
ZIP codes where Isleton residents live, with the share of the town in each.
| ZIP | Post office name | Share of Isleton | ZIP’s residents in Isleton |
|---|---|---|---|
| 95641 | Isleton, CA | 100% | 35% |
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 Isleton
Who supplies Isleton’s drinking water, and has it had violations?
The Cal Am - Isleton water system (EPA ID CA3410012). 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 2.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Isleton?
PG&E (Pacific Gas & Electric Co.), an investor-owned utility. Its homes paid about 37.5¢ per kWh in 2025 (EIA).
What internet providers serve Isleton?
Frontier, unWired Broadband, Cal.net, DigitalPath, Verizon, Softcom Internet Communications (FCC, as of December 2025).
What ZIP codes are in Isleton?
95641. Census 2020 ZIP Code Tabulation Areas.
What school district is Isleton in?
River Delta Joint Unified School District.
How do I register to vote in Isleton?
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 County of Sacramento Voter Registration and 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: Isleton’s own website (cityofisleton.com), read Oct 22, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.