Photo: Jordan W. · CC BY-SA 3.0Living in Rancho Cucamonga, CA: what to set up and who to call
Rancho Cucamonga spans 4 ZIP codes; 91730 holds the most residents (39%). Trains stop in Rancho Cucamonga.
I’m new in town
What to set up in Rancho Cucamonga, 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 Rancho Cucamonga.
Power comes from Southern California Edison
Southern California Edison (Southern California Edison Co), an investor-owned utility, serves 98.0% of Rancho Cucamonga residents. Its homes paid an average of 31.5¢ per kWh in 2025, about $149 a month (its average across California, for customers on its standard service). California lets you buy power from another supplier; 30% of Southern California Edison’s home customers do, and Southern California Edison still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Cucamonga Valley Water District
Cucamonga Valley Water District supplies almost all of Rancho Cucamonga. It draws surface water (EPA lists Ontario Municipal Utilities Company and San Gabriel Valley Wc - Fontana and City of Upland as sellers) and serves 211,069 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 86% of the 332 systems serving 100,001–250,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, 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. CA3610018.
5 home internet providers serve Rancho Cucamonga
97% of 46,664 addresses can get 100/20 Mbps; 21% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 98% | 1,000/35 |
| AT&T | Fixed wireless, Fiber | 31% | 100/20 |
| Frontier | Fiber, DSL | 20% | 7,000/7,000 |
| T-Mobile | Fixed wireless | 50% | 100/20 |
| Verizon | Fixed wireless | 48% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash and recycling in Rancho Cucamonga
Pickup days, the drop-off and recycling in Rancho Cucamonga, from the town’s own site.
We couldn’t find pickup days or drop-off hours. Check cityofrc.us →
From cityofrc.us, the town’s official site, checked Oct 21, 2026; pages dated 2025. 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.
Rancho Cucamonga is in Chaffey Joint Union High School District; parts are in Etiwanda Elementary School District (40%) and Alta Loma Elementary School District (29%) and Cucamonga Elementary School District (18%) and Central Elementary School District (12%).
ASchool 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 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Rancho Cucamonga spans 4 ZIP codes
ZIP codes where Rancho Cucamonga residents live, with the share of the town in each.
| ZIP | Post office name | Share of Rancho Cucamonga | ZIP’s residents in Rancho Cucamonga |
|---|---|---|---|
| 91730 | Rancho Cucamonga, CA | 39% | 100% |
| 91739 | Rancho Cucamonga, CA | 24% | 100% |
| 91701 | Rancho Cucamonga, CA | 22% | 100% |
| 91737 | Rancho Cucamonga, CA | 14% | 100% |
91729 is P.O. box or single-organization ZIP with no homes.
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.
Train: OpenStreetMap (© OpenStreetMap contributors). ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Rancho Cucamonga
Who supplies Rancho Cucamonga’s drinking water, and has it had violations?
Cucamonga Valley Water District (EPA ID CA3610018). It reported no health-based violations to EPA in the five years to October 2026; 86% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Rancho Cucamonga?
Southern California Edison (Southern California Edison Co), an investor-owned utility. Its homes paid about 31.5¢ per kWh in 2025 (EIA).
What internet providers serve Rancho Cucamonga?
Spectrum, AT&T, Frontier, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in Rancho Cucamonga?
91730 (39%), 91739 (24%), 91701 (22%), 91737 (14%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Rancho Cucamonga in?
Chaffey Joint Union High School District. Parts of the city are in Etiwanda Elementary School District and Alta Loma Elementary School District and Cucamonga Elementary School District and Central Elementary School District.
How do I register to vote in Rancho Cucamonga?
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 San Bernardino 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: Rancho Cucamonga’s own website (cityofrc.us), read Oct 21, 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.