Photo: J.B. Chandler · CC BY-SA 3.0Living in Dupuyer, MT: what to set up and who to call
Dupuyer has no town government of its own, so Pondera County runs its elections and most services, and its children attend Dupuyer Elementary School District. Power in Dupuyer comes from Sun River Electric Coop, a cooperative utility rather than a private company.
I’m new in town
What to set up in Dupuyer, 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 Dupuyer.
Power comes from Sun River Electric Coop
Sun River Electric Coop (Sun River Electric Coop, Inc), a cooperative utility, serves all of Dupuyer.
Start or move service: www.sunriverelectric.coop · (406) 467-2526
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from New Miami Colony water system
The New Miami Colony water system supplies Dupuyer: about 4% of residents live in its service area. About 96% 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 130 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 2023–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 2.0 ppb. 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 (EPA’s estimate). Violations are counted by the start of their compliance period. MT0001914.
2 home internet providers serve Dupuyer
100% of 76 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| 3 Rivers Communications | Fiber | 100% | 1,000/1,000 |
| Verizon | Fixed wireless | 7% | 25/6 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Dupuyer’s trash rules yet
Pickup rules, the dump and recycling in Dupuyer.
Where your child goes to school
Public school districts and the school path by grade.
Dupuyer is in two districts that split the grades: Dupuyer Elementary School District and Valier High 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
Dupuyer is unincorporated, so Pondera County is the local government.
Election office: FVAP local election office directory, updated Aug 2022; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Dupuyer is in ZIP code 59432
ZIP codes where Dupuyer residents live, with the share of the town in each.
| ZIP | Post office name | Share of Dupuyer | ZIP’s residents in Dupuyer |
|---|---|---|---|
| 59432 | Dupuyer, MT | 100% | 65% |
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 Dupuyer
Who supplies Dupuyer’s drinking water, and has it had violations?
The New Miami Colony water system (EPA ID MT0001914). 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 0.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Dupuyer?
Sun River Electric Coop (Sun River Electric Coop, Inc), a cooperative utility.
What internet providers serve Dupuyer?
3 Rivers Communications, Verizon (FCC, as of December 2025).
What ZIP codes are in Dupuyer?
59432. Census 2020 ZIP Code Tabulation Areas.
What school district is Dupuyer in?
Dupuyer Elementary School District and Valier High School District.
How do I register to vote in Dupuyer?
Montana has no online registration; you can register in person up to and including Election Day or by mail (postmarked 30 days before). Elections here are run by the Pondera County Election Administrator. Check your registration at prodvoterportal.mt.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.