Living in Deaver, WY: what to set up and who to call
Deaver runs its own electric utility, City of Deaver. Tap water in Deaver comes from Deaver Municipal Water System, which has a clean five-year EPA record (about 23% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Deaver, 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 Deaver.
Power comes from City of Deaver
City of Deaver (City of Deaver - (WY)), a municipal utility, serves all of Deaver.
Start or move service: (307) 664-2736
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Deaver Municipal Water System
Deaver Municipal Water System supplies almost all of Deaver. It buys treated surface water (EPA lists Town of Cowley and Shoshone Municipal Pipeline as sellers) and serves 176 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 1.0 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. Violations are counted by the start of their compliance period. WY5600016.
1 home internet providers serve Deaver
44% of 94 addresses can get 100/20 Mbps; 44% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| TCT Internet | DSL, 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 Deaver’s trash rules yet
Pickup rules, the dump and recycling in Deaver.
Where your child goes to school
Public school districts and the school path by grade.
Deaver is in Big Horn County School District 1.
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.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Deaver is in ZIP code 82421
ZIP codes where Deaver residents live, with the share of the town in each.
| ZIP | Post office name | Share of Deaver | ZIP’s residents in Deaver |
|---|---|---|---|
| 82421 | Deaver, WY | 100% | 34% |
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 Deaver
Who supplies Deaver’s drinking water, and has it had violations?
Deaver Municipal Water System (EPA ID WY5600016). 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 Deaver?
City of Deaver (City of Deaver - (WY)), a municipal utility.
What internet providers serve Deaver?
TCT Internet (FCC, as of December 2025).
What ZIP codes are in Deaver?
82421. Census 2020 ZIP Code Tabulation Areas.
What school district is Deaver in?
Big Horn County School District 1.
How do I register to vote in Deaver?
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.