EJP County Line Bridge · Photo: Jbernhisel · CC BY-SA 4.0Living in Hyattville, WY: what to set up and who to call
Hyattville has no town government of its own, so Big Horn County runs its elections and most services, and its children attend Big Horn County School District 4. Tap water in most of Hyattville comes from Hyattville S&i District, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result of 1.0 ppb.
I’m new in town
What to set up in Hyattville, 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 Hyattville.
Power comes from Big Horn Rural Electric
Big Horn Rural Electric (Big Horn Rural Electric Co), a cooperative utility, serves all of Hyattville.
Start or move service: bighornrea.com · (307) 568-2419
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Hyattville S&i District
Hyattville S&i District supplies Hyattville: about 76% of residents live in its service area. About 24% 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 60 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 2022–Dec 2024, was 1.0 ppb, below the 15 ppb action level that applied. The highest in five years was 2.0 ppb. That’s higher than 55% 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. WY5600209.
1 home internet providers serve Hyattville
75% of 66 addresses can get 100/20 Mbps; 75% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| TCT Internet | DSL, Fiber | 94% | 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 Hyattville’s trash rules yet
Pickup rules, the dump and recycling in Hyattville.
Where your child goes to school
Public school districts and the school path by grade.
Hyattville is in Big Horn County School District 4.
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
Hyattville is unincorporated, so Big Horn County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Hyattville is in ZIP code 82428
ZIP codes where Hyattville residents live, with the share of the town in each.
| ZIP | Post office name | Share of Hyattville | ZIP’s residents in Hyattville |
|---|---|---|---|
| 82428 | Hyattville, WY | 100% | 56% |
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 Hyattville
Who supplies Hyattville’s drinking water, and has it had violations?
Hyattville S&i District (EPA ID WY5600209). 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 1.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Hyattville?
Big Horn Rural Electric (Big Horn Rural Electric Co), a cooperative utility.
What internet providers serve Hyattville?
TCT Internet (FCC, as of December 2025).
What ZIP codes are in Hyattville?
82428. Census 2020 ZIP Code Tabulation Areas.
What school district is Hyattville in?
Big Horn County School District 4.
How do I register to vote in Hyattville?
Wyoming has no online registration; you can register in person up to and including Election Day or by mail (received 14 days before). Elections here are run by the Big Horn County Clerk. Check your registration at sos.wyo.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.