Living in Sidney, AR: what to set up and who to call
Most mail in Sidney goes to 72577 (74% of residents), one of 2 ZIP codes in town. Sidney has an emergency room in town, at White River Medical Center.
I’m new in town
What to set up in Sidney, 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 Sidney.
Power comes from Entergy Arkansas
Entergy Arkansas (Entergy Arkansas LLC), an investor-owned utility, serves all of Sidney. Its homes paid an average of 13.4¢ per kWh in 2025, about $145 a month (its average across Arkansas).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Sidney Water System
Sidney Water System supplies almost all of Sidney. It draws ground water (EPA lists Mt Pleasant Waterworks and Cave City Waterworks as sellers) 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 2002–Dec 2004, was 3.0 ppb, below the 15 ppb action level that applied. It’s from 2004: EPA has no newer result for this system.
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. AR0000528.
1 home internet providers serve Sidney
84% of 95 addresses can get 100/20 Mbps; 84% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Hillbilly Wireless | Fiber, Fixed wireless | 84% | 1,000/1,000 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Sidney’s trash rules yet
Pickup rules, the dump and recycling in Sidney.
Where your child goes to school
Public school districts and the school path by grade.
Sidney is in Cave City 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.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Aug 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Sidney spans 2 ZIP codes
ZIP codes where Sidney residents live, with the share of the town in each.
| ZIP | Post office name | Share of Sidney | ZIP’s residents in Sidney |
|---|---|---|---|
| 72577 | Sidney, AR | 74% | 20% |
| 72521 | Cave City, AR | 26% | 1% |
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 Sidney
Who supplies Sidney’s drinking water, and has it had violations?
Sidney Water System (EPA ID AR0000528). 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 3.0 ppb (Jan 2002–Dec 2004), against a 15 ppb action level.
Who provides electricity in Sidney?
Entergy Arkansas (Entergy Arkansas LLC), an investor-owned utility. Its homes paid about 13.4¢ per kWh in 2025 (EIA).
What internet providers serve Sidney?
Hillbilly Wireless (FCC, as of December 2025).
What ZIP codes are in Sidney?
72577 (74%), 72521 (26%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Sidney in?
Cave City School District.
How do I register to vote in Sidney?
Arkansas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before). Elections here are run by the Sharp County Clerk. Check your registration at voterview.ar-nova.org.
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 Nov 18, 2024 (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.