Photo: Tamanoeconomico · CC BY-SA 4.0Living in Nampa, ID: what to set up and who to call
Most mail in Nampa goes to 83686 (43% of residents), one of 3 ZIP codes in town. The closest ER is Saint Alphonsus Medical Center - Nampa, 2.4 miles away.
I’m new in town
What to set up in Nampa, 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 Nampa.
Power comes from Idaho Power
Idaho Power (Idaho Power Co), an investor-owned utility, serves all of Nampa. 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 City of Nampa water system
The City of Nampa water system supplies almost all of Nampa. It draws ground water and serves 100,200 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 86% of the 332 systems serving 100,001–250,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2025–Dec 2027, was 1.0 ppb, below the 15 ppb action level that applied. The highest in five years was 2.0 ppb. That’s lower than 59% 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. ID3140080.
8 home internet providers serve Nampa
99% of 35,655 addresses can get 100/20 Mbps; 68% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Sparklight | Cable, Fiber | 98% | 1,000/50 |
| CenturyLink | DSL, Fiber | 62% | 140/20 |
| TDS Telecom | Fiber | 59% | 8,000/8,000 |
| Quantum Fiber | Fiber | 27% | 8,000/8,000 |
| Rise Broadband | Fixed wireless | 92% | 300/60 |
| Anthem Broadband | Fixed wireless | 58% | 500/100 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Nampa’s trash rules yet
Pickup rules, the dump and recycling in Nampa.
Where your child goes to school
Public school districts and the school path by grade.
Most of Nampa (70%) is in Nampa School District 131; parts are in Vallivue School District 139 (28%).
CSchool 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 Nov 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Nampa spans 3 ZIP codes
ZIP codes where Nampa residents live, with the share of the town in each.
| ZIP | Post office name | Share of Nampa | ZIP’s residents in Nampa |
|---|---|---|---|
| 83686 | Nampa, ID | 43% | 78% |
| 83651 | Nampa, ID | 32% | 92% |
| 83687 | Nampa, ID | 25% | 67% |
83652, 83653 are P.O. box or single-organization ZIPs with no homes.
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 Nampa
Who supplies Nampa’s drinking water, and has it had violations?
The City of Nampa water system (EPA ID ID3140080). It reported no health-based violations to EPA in the five years to October 2026; 86% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan 2025–Dec 2027), against a 15 ppb action level.
Who provides electricity in Nampa?
Idaho Power (Idaho Power Co), an investor-owned utility. Its homes paid about 11.8¢ per kWh in 2025 (EIA).
What internet providers serve Nampa?
Sparklight, CenturyLink, TDS Telecom, Quantum Fiber, Rise Broadband, Anthem Broadband (FCC, as of December 2025).
What ZIP codes are in Nampa?
83686 (43%), 83651 (32%), 83687 (25%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Nampa in?
Nampa School District 131. Parts of the city are in Vallivue School District 139.
How do I register to vote in Nampa?
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 Canyon 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.