Photo: Public domain · Public domainLiving in Idaho City, ID: what to set up and who to call
Idaho City Water Dept reported 2 health-based violations to EPA in the last five years: a surface water treatment requirement (Interim Enhanced Surface Water Treatment Rule) ×2. 78% of systems its size reported none. The ER is a drive from Idaho City: the closest is St. Luke's Regional Medical Center, 23.4 miles away.
I’m new in town
What to set up in Idaho City, 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 Idaho City.
Power comes from Idaho Power
Idaho Power (Idaho Power Co), an investor-owned utility, serves all of Idaho City. Its homes paid an average of 11.8¢ per kWh in 2025, about $106 a month (its average across Idaho State).
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 Idaho City Water Dept
Idaho City Water Dept supplies Idaho City: about 92% of residents live in its service area. About 8% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water and serves 531 people in all.
2 health-based violations reported to EPA in the five years to October 2026: a surface water treatment requirement (Interim Enhanced Surface Water Treatment Rule) ×2, the latest beginning Apr 2023. 78% of the 5,327 systems serving 501–1,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2025, was 2.0 ppb, below the 15 ppb action level that applied. The highest in five years was 4.0 ppb. That’s higher than 70% 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. ID4080025.
2 home internet providers serve Idaho City
6% of 303 addresses can get 100/20 Mbps; 6% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| CenturyLink | DSL, Fiber | 83% | 200/200 |
| Quantum Fiber | Fiber | 11% | 2,000/1,000 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Idaho City’s trash rules yet
Pickup rules, the dump and recycling in Idaho City.
Where your child goes to school
Public school districts and the school path by grade.
Idaho City is in Basin School District 72.
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.
Idaho City is in ZIP code 83631
ZIP codes where Idaho City residents live, with the share of the town in each.
| ZIP | Post office name | Share of Idaho City | ZIP’s residents in Idaho City |
|---|---|---|---|
| 83631 | Idaho City, ID | 100% | 35% |
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 Idaho City
Who supplies Idaho City’s drinking water, and has it had violations?
Idaho City Water Dept (EPA ID ID4080025). It reported 2 health-based violations to EPA in the five years to October 2026: a surface water treatment requirement (Interim Enhanced Surface Water Treatment Rule) ×2. 78% of systems its size had none. Its latest lead 90th percentile was 2.0 ppb (Jan–Jun 2025), against a 15 ppb action level.
Who provides electricity in Idaho City?
Idaho Power (Idaho Power Co), an investor-owned utility. Its homes paid about 11.8¢ per kWh in 2025 (EIA).
What internet providers serve Idaho City?
CenturyLink, Quantum Fiber (FCC, as of December 2025).
What ZIP codes are in Idaho City?
83631. Census 2020 ZIP Code Tabulation Areas.
What school district is Idaho City in?
Basin School District 72.
How do I register to vote in Idaho City?
In Idaho State 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 Boise 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.