Tackett Underwood Building · Photo: Ammodramus · CC0Living in Gregory, SD: what to set up and who to call
Power in Gregory comes from Rosebud Electric Coop, a cooperative utility rather than a private company. The closest ER is Community Memorial Hospital, 7.2 miles away.
I’m new in town
What to set up in Gregory, 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 Gregory.
Power comes from Rosebud Electric Coop
Rosebud Electric Coop (Rosebud Electric Coop Inc), a cooperative utility, serves all of Gregory. Its homes paid an average of 11.9¢ per kWh in 2025, about $137 a month (its average across South Dakota).
Start or move service: rosebudelectric.com · (605) 835-9624
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Gregory water system
The Gregory water system supplies Gregory: about 89% of residents live in its service area. Tripp County Water User District serves another 12%. About 5% 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 1,221 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2023, was 3.0 ppb, below the 15 ppb action level that applied. That’s higher than 82% 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. SD4600145.
1 home internet providers serve Gregory
100% of 726 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Golden West Telecommunications | Fiber | 100% | 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 Gregory’s trash rules yet
Pickup rules, the dump and recycling in Gregory.
Where your child goes to school
Public school districts and the school path by grade.
Gregory is in Gregory School District 26-4.
BSchool 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 Jul 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Gregory is in ZIP code 57533
ZIP codes where Gregory residents live, with the share of the town in each.
| ZIP | Post office name | Share of Gregory | ZIP’s residents in Gregory |
|---|---|---|---|
| 57533 | Gregory, SD | 100% | 69% |
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 Gregory
Who supplies Gregory’s drinking water, and has it had violations?
The Gregory water system (EPA ID SD4600145). 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 3.0 ppb (Jan–Dec 2023), against a 15 ppb action level.
Who provides electricity in Gregory?
Rosebud Electric Coop (Rosebud Electric Coop Inc), a cooperative utility. Its homes paid about 11.9¢ per kWh in 2025 (EIA).
What internet providers serve Gregory?
Golden West Telecommunications (FCC, as of December 2025).
What ZIP codes are in Gregory?
57533. Census 2020 ZIP Code Tabulation Areas.
What school district is Gregory in?
Gregory School District 26-4.
How do I register to vote in Gregory?
South Dakota has no online registration; you can register in person until 15 days before Election Day or by mail (received 15 days before). Elections here are run by the Gregory County Auditor. Check your registration at vip.sdsos.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 Aug 3, 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.