Photo: PostalRoadTrips · CC BY-SA 4.0Living in Newcastle, UT: what to set up and who to call
Newcastle has no town government of its own, so Iron County runs its elections and most services, and its children attend Iron School District. Tap water in Newcastle comes from New Castle Water Company, 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 Newcastle, 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 Newcastle.
Power comes from Dixie Escalante R E A
Dixie Escalante R E A (Dixie Escalante R E A, Inc), a cooperative utility, serves all of Newcastle. Its homes paid an average of 9.2¢ per kWh in 2025, about $123 a month (its average across Utah).
Start or move service: dixiepower.com · (435) 439-5311
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from New Castle Water Company
New Castle Water Company supplies almost all of Newcastle. It draws ground water (EPA lists Enterprise Town Water System as seller) and serves 350 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. 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. UTAH11013.
3 home internet providers serve Newcastle
87% of 111 addresses can get 100/20 Mbps; 86% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| South Central Communications | Fiber | 85% | 1,000/1,000 |
| TDS Telecom | Cable | 9% | 1,000/20 |
| InfoWest | Fixed wireless | 63% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Newcastle’s trash rules yet
Pickup rules, the dump and recycling in Newcastle.
Where your child goes to school
Public school districts and the school path by grade.
Newcastle is in Iron School District.
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.
No town hall: the county runs things
Newcastle is unincorporated, so Iron County is the local government.
Election office: FVAP local election office directory, updated Nov 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Mar 13, 2026.
Newcastle is in ZIP code 84756
ZIP codes where Newcastle residents live, with the share of the town in each.
| ZIP | Post office name | Share of Newcastle | ZIP’s residents in Newcastle |
|---|---|---|---|
| 84756 | Newcastle, UT | 100% | 74% |
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 Newcastle
Who supplies Newcastle’s drinking water, and has it had violations?
New Castle Water Company (EPA ID UTAH11013). 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 Newcastle?
Dixie Escalante R E A (Dixie Escalante R E A, Inc), a cooperative utility. Its homes paid about 9.2¢ per kWh in 2025 (EIA).
What internet providers serve Newcastle?
South Central Communications, TDS Telecom, InfoWest (FCC, as of December 2025).
What ZIP codes are in Newcastle?
84756. Census 2020 ZIP Code Tabulation Areas.
What school district is Newcastle in?
Iron School District.
How do I register to vote in Newcastle?
In Utah 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 Iron County Clerk. Check your registration at votesearch.utah.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 Mar 13, 2026 (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.