Photo: Pi.1415926535 · CC BY-SA 4.0Living in Dunnigan, CA: what to set up and who to call
Dunnigan has no town government of its own, so Yolo County runs its elections and most services, and its children attend Pierce Joint Unified School District. Wired internet is thin in Dunnigan: the FCC’s map has 47% of addresses able to get it.
I’m new in town
What to set up in Dunnigan, 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 Dunnigan.
Power comes from PG&E
PG&E (Pacific Gas & Electric Co.), an investor-owned utility, serves all of Dunnigan. 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 - Dunnigan water system
The Cal Am - Dunnigan water system supplies Dunnigan: about 23% of residents live in its service area. Campers Inn - Rv & Golf Course serves another 22%. About 56% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 602 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 5,327 systems serving 501–1,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, 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. CA5700712.
6 home internet providers serve Dunnigan
29% of 519 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| AT&T | DSL, Fixed wireless | 43% | 25/3 |
| Corridor Wireless | Fixed wireless | 100% | 100/100 |
| Succeed.Net | Fixed wireless | 100% | 100/50 |
| unWired Broadband | Fixed wireless | 100% | 1,000/1,000 |
| Verizon | Fixed wireless | 62% | 300/20 |
| T-Mobile | Fixed wireless | 32% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Dunnigan’s trash rules yet
Pickup rules, the dump and recycling in Dunnigan.
Where your child goes to school
Public school districts and the school path by grade.
Dunnigan is in Pierce 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.
No town hall: the county runs things
Dunnigan is unincorporated, so Yolo 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.
Dunnigan is in ZIP code 95937
ZIP codes where Dunnigan residents live, with the share of the town in each.
| ZIP | Post office name | Share of Dunnigan | ZIP’s residents in Dunnigan |
|---|---|---|---|
| 95937 | Dunnigan, CA | 100% | 89% |
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 Dunnigan
Who supplies Dunnigan’s drinking water, and has it had violations?
The Cal Am - Dunnigan water system (EPA ID CA5700712). 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 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Dunnigan?
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 Dunnigan?
AT&T, Corridor Wireless, Succeed.Net, unWired Broadband, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Dunnigan?
95937. Census 2020 ZIP Code Tabulation Areas.
What school district is Dunnigan in?
Pierce Joint Unified School District.
How do I register to vote in Dunnigan?
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 Yolo County Elections Office. 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.