Photo: Greg L. Wright - SnapJag · CC BY-SA 3.0Living in Sun Valley, ID: what to set up and who to call
All of Sun Valley gets its mail under one ZIP code, 83353. The closest ER is St. Luke's Wood River Medical Center, 2.4 miles away.
I’m new in town
What to set up in Sun Valley, 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 Sun Valley.
Power comes from Idaho Power
Idaho Power (Idaho Power Co), an investor-owned utility, serves 74.3% of Sun Valley residents. Its homes paid an average of 11.8¢ per kWh in 2025, about $106 a month (its average across Idaho).
Start or move service: idahopower.com · (800) 488-6151
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Sun Valley Water and Sewer Dist
Sun Valley Water and Sewer Dist supplies Sun Valley: about 94% of residents live in its service area. About 6% 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 3,400 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 4.0 ppb, below the 15 ppb action level that applied. That’s higher than 87% 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 (EPA’s estimate). Violations are counted by the start of their compliance period. ID5070051.
4 home internet providers serve Sun Valley
99% of 1,507 addresses can get 100/20 Mbps; 2% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Cox Communications | Cable, Fiber | 98% | 2,000/100 |
| CenturyLink | DSL, Fiber | 52% | 40/3 |
| Verizon | Fixed wireless | 77% | 300/20 |
| T-Mobile | Fixed wireless | 58% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Sun Valley’s trash rules yet
Pickup rules, the dump and recycling in Sun Valley.
Where your child goes to school
Public school districts and the school path by grade.
Sun Valley is in Blaine County School District 61.
B+School gradeSee 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 Sep 12, 2025.
Sun Valley is in ZIP code 83353
ZIP codes where Sun Valley residents live, with the share of the town in each.
| ZIP | Post office name | Share of Sun Valley | ZIP’s residents in Sun Valley |
|---|---|---|---|
| 83353 | Sun Valley, ID | 99% | 100% |
A few homes fall in 83340, 83354.
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 Sun Valley
Who supplies Sun Valley’s drinking water, and has it had violations?
Sun Valley Water and Sewer Dist (EPA ID ID5070051). It reported no health-based violations to EPA in the five years to October 2026; 80% of systems its size had none. Its latest lead 90th percentile was 4.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Sun Valley?
Idaho Power (Idaho Power Co), an investor-owned utility. Its homes paid about 11.8¢ per kWh in 2025 (EIA).
What internet providers serve Sun Valley?
Cox Communications, CenturyLink, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Sun Valley?
83353. Census 2020 ZIP Code Tabulation Areas.
What school district is Sun Valley in?
Blaine County School District 61.
How do I register to vote in Sun Valley?
In Idaho you can register online until 11 days before Election Day, in person up to and including Election Day, or by mail (received 11 days before). Elections here are run by the Blaine County Clerk. Check your registration at elections.sos.idaho.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 Sep 12, 2025 (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.