State Bank of Kooskia · Photo: JERRYE AND ROY KLOTZ MD · CC BY-SA 3.0Living in Kooskia, ID: what to set up and who to call
Tap water in Kooskia comes from Kooskia Water Dept, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result below detection. For an emergency, Syringa General Hospital is the closest ER, 16.6 miles away.
I’m new in town
What to set up in Kooskia, 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 Kooskia.
Power comes from Avista
Avista (Avista Corp.), an investor-owned utility, serves all of Kooskia. Its homes paid an average of 11.8¢ per kWh in 2025, about $107 a month (its average across Idaho).
Start or move service: avistacorp.com · (509) 489-0500
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Kooskia Water Dept
Kooskia Water Dept supplies Kooskia: about 96% of residents live in its service area. About 4% 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 607 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 5,327 systems serving 501–1,000 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 (EPA’s estimate). Violations are counted by the start of their compliance period. ID2250032.
5 home internet providers serve Kooskia
89% of 361 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| CenturyLink | DSL | 69% | 10/1 |
| Airbridge Broadband | Fixed wireless | 100% | 400/400 |
| Inland Cellular | Fixed wireless | 80% | 100/20 |
| T-Mobile | Fixed wireless | 76% | 100/20 |
| First Step Internet | Fixed wireless | 9% | 25/4 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Kooskia’s trash rules yet
Pickup rules, the dump and recycling in Kooskia.
Where your child goes to school
Public school districts and the school path by grade.
Kooskia is in Mountain View School District 244.
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 Aug 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Kooskia is in ZIP code 83539
ZIP codes where Kooskia residents live, with the share of the town in each.
| ZIP | Post office name | Share of Kooskia | ZIP’s residents in Kooskia |
|---|---|---|---|
| 83539 | Kooskia, ID | 100% | 28% |
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 Kooskia
Who supplies Kooskia’s drinking water, and has it had violations?
Kooskia Water Dept (EPA ID ID2250032). 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 0.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Kooskia?
Avista (Avista Corp.), an investor-owned utility. Its homes paid about 11.8¢ per kWh in 2025 (EIA).
What internet providers serve Kooskia?
CenturyLink, Airbridge Broadband, Inland Cellular, T-Mobile, First Step Internet (FCC, as of December 2025).
What ZIP codes are in Kooskia?
83539. Census 2020 ZIP Code Tabulation Areas.
What school district is Kooskia in?
Mountain View School District 244.
How do I register to vote in Kooskia?
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 Idaho 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.