Living in Bynum, MT: what to set up and who to call
Bynum has no town government of its own, so Teton County runs its elections and most services, and its children attend Bynum Elementary School District. Power in Bynum comes from Sun River Electric Coop, a cooperative utility rather than a private company.
I’m new in town
What to set up in Bynum, 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 Bynum.
Power comes from Sun River Electric Coop
Sun River Electric Coop (Sun River Electric Coop, Inc), a cooperative utility, serves all of Bynum.
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 Bynum - Teton Co W & S District
Bynum - Teton Co W & S District supplies Bynum: about 0% of residents live in its service area. About 100% 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 100 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 11,392 systems serving <=100 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 3.0 ppb, below the 15 ppb action level that applied. That’s higher than 80% 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. MT0004778.
1 home internet providers serve Bynum
100% of 20 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| 3 Rivers Communications | Fiber | 100% | 1,000/1,000 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Bynum’s trash rules yet
Pickup rules, the dump and recycling in Bynum.
Where your child goes to school
Public school districts and the school path by grade.
Bynum is in two districts that split the grades: Bynum Elementary School District and Choteau 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
Bynum is unincorporated, so Teton County is the local government.
Election office: FVAP local election office directory, updated Jan 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Bynum is in ZIP code 59419
ZIP codes where Bynum residents live, with the share of the town in each.
| ZIP | Post office name | Share of Bynum | ZIP’s residents in Bynum |
|---|---|---|---|
| 59419 | Bynum, MT | 100% | 14% |
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 Bynum
Who supplies Bynum’s drinking water, and has it had violations?
Bynum - Teton Co W & S District (EPA ID MT0004778). 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 3.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Bynum?
Sun River Electric Coop (Sun River Electric Coop, Inc), a cooperative utility.
What internet providers serve Bynum?
3 Rivers Communications (FCC, as of December 2025).
What ZIP codes are in Bynum?
59419. Census 2020 ZIP Code Tabulation Areas.
What school district is Bynum in?
Bynum Elementary School District and Choteau High School District.
How do I register to vote in Bynum?
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 Teton 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.