Photo: Oleg Alexandrov · CC BY-SA 4.0Living in Napa, CA: what to set up and who to call
Napa spans 2 ZIP codes; 94558 holds the most residents (67%). Trains stop in Napa.
I’m new in town
What to set up in Napa, 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 Napa.
Power comes from PG&E
PG&E (Pacific Gas & Electric Co.), an investor-owned utility, serves all of Napa. 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 City of Napa water system
The City of Napa water system supplies almost all of Napa. It draws surface water (EPA lists City of Calistoga and City of St. Helena and City of American Canyon and Town of Yountville as sellers) and serves 84,804 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 90% of the 597 systems serving 50,001–100,000 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. CA2810003.
4 home internet providers serve Napa
99% of 24,105 addresses can get 100/20 Mbps; 30% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable, Fiber | 99% | 2,000/250 |
| AT&T | DSL, Fiber, Fixed wireless | 93% | 5,000/5,000 |
| Verizon | Fixed wireless | 50% | 300/20 |
| T-Mobile | Fixed wireless | 45% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Curbside recycling in Napa: every week
Pickup days, the drop-off and recycling in Napa, from the town’s own site.
Napa Recycling and Compost Facility
820 Levitin Way, American Canyon, CA 94503
We couldn’t find its opening hours.
From cityofnapa.org, the town’s official site, checked Oct 21, 2026; pages dated July 1, 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.
Napa is in Napa Valley 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.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Napa spans 2 ZIP codes
ZIP codes where Napa residents live, with the share of the town in each.
| ZIP | Post office name | Share of Napa | ZIP’s residents in Napa |
|---|---|---|---|
| 94558 | Napa, CA | 67% | 81% |
| 94559 | Napa, CA | 33% | 93% |
94581 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 Napa
Who supplies Napa’s drinking water, and has it had violations?
The City of Napa water system (EPA ID CA2810003). It reported no health-based violations to EPA in the five years to October 2026; 90% 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 Napa?
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 Napa?
Xfinity, AT&T, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Napa?
94558 (67%), 94559 (33%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Napa in?
Napa Valley Unified School District.
How do I register to vote in Napa?
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 Napa County Election Division. 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: Napa’s own website (cityofnapa.org), 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.