Living in Muir Beach, CA: what to set up and who to call
Muir Beach has no town government of its own, so Marin County runs its elections and most services, and its children attend Tamalpais Union High School District. The Muir Beach Community water system has a clean five-year EPA record, but its latest lead result, 10.0 ppb, was higher than 97% of similar systems’ (the action level is 15).
I’m new in town
What to set up in Muir Beach, 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 Muir Beach.
Power comes from PG&E
PG&E (Pacific Gas & Electric Co.), an investor-owned utility, serves all of Muir Beach. 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 Muir Beach Community water system
The Muir Beach Community water system supplies almost all of Muir Beach. It draws ground water and serves 336 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 10.0 ppb, below the 15 ppb action level that applied. That’s higher than 97% 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. CA2100508.
Which providers serve Muir Beach
This card will list the home internet providers the FCC’s National Broadband Map shows in Muir Beach, the share of addresses that can get 100/20 Mbps and the share with fiber, with the map’s “as of” date.
Source to come: FCC Broadband Data Collection.
We don’t have Muir Beach’s trash rules yet
Pickup rules, the dump and recycling in Muir Beach.
Where your child goes to school
Public school districts and the school path by grade.
Muir Beach is in two districts that split the grades: Tamalpais Union High School District and Mill Valley Elementary 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.
No town hall: the county runs things
Muir Beach is unincorporated, so Marin 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.
Muir Beach is in ZIP code 94965
ZIP codes where Muir Beach residents live, with the share of the town in each.
| ZIP | Post office name | Share of Muir Beach | ZIP’s residents in Muir Beach |
|---|---|---|---|
| 94965 | Sausalito, CA | 100% | 3% |
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 Muir Beach
Who supplies Muir Beach’s drinking water, and has it had violations?
The Muir Beach Community water system (EPA ID CA2100508). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 10.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Muir Beach?
PG&E (Pacific Gas & Electric Co.), an investor-owned utility. Its homes paid about 37.5¢ per kWh in 2025 (EIA).
What ZIP codes are in Muir Beach?
94965. Census 2020 ZIP Code Tabulation Areas.
What school district is Muir Beach in?
Tamalpais Union High School District and Mill Valley Elementary School District. Parts of the city are in Bolinas-Stinson Union Elementary School District.
How do I register to vote in Muir Beach?
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 Marin County 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): pending.