Photo: JERRYE AND ROY KLOTZ MD · CC BY-SA 3.0Living in Spearfish, SD: what to set up and who to call
Spearfish spans 2 ZIP codes; 57783 holds the most residents (94%). Wisp West, Celerity Internet and Midco both wire most of Spearfish; 31% of addresses can get fiber.
I’m new in town
What to set up in Spearfish, 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 Spearfish.
Power comes from Black Hills Energy
Black Hills Energy (Black Hills Power, Inc.), an investor-owned utility, serves all of Spearfish. Its homes paid an average of 15.1¢ per kWh in 2025, about $106 a month (its average across South Dakota).
Start or move service: blackhillspower.com · (800) 742-8948
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Spearfish water system
The Spearfish water system supplies Spearfish: about 84% of residents live in its service area. About 13% 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 13,803 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2024, was 3.0 ppb, below the 15 ppb action level that applied. That’s higher than 79% 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. SD4600311.
7 home internet providers serve Spearfish
100% of 4,474 addresses can get 100/20 Mbps; 31% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Wisp West, Celerity Internet | Fixed wireless, Fiber | 100% | 100/20 |
| Midco | Cable, Fiber | 99% | 2,000/350 |
| Bluepeak | Cable, Fiber | 84% | 5,000/5,000 |
| CenturyLink | DSL, Fiber | 38% | 60/5 |
| T-Mobile | Fixed wireless | 81% | 100/20 |
| AT&T | Fixed wireless | 50% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Spearfish depends on your street
Pickup days, the drop-off and recycling in Spearfish, from the town’s own site.
Your pickup week
- TrashEvery week, on your street’s dayFind your street’s day on spearfish.gov →
- Bulky itemsCall to book
Restricted Use Site (Rubble Site)
910 Camp Comfort Road, Spearfish, SD 57783
We couldn’t find its opening hours.
From spearfish.gov, the town’s official site, checked Oct 21, 2026; pages dated 2026-10-01. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Spearfish is in Spearfish School District 40-2.
B+School 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.
Spearfish spans 2 ZIP codes
ZIP codes where Spearfish residents live, with the share of the town in each.
| ZIP | Post office name | Share of Spearfish | ZIP’s residents in Spearfish |
|---|---|---|---|
| 57783 | Spearfish, SD | 94% | 71% |
| 57799 | Spearfish, SD | 6% | 100% |
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 Spearfish
Who supplies Spearfish’s drinking water, and has it had violations?
The Spearfish water system (EPA ID SD4600311). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 3.0 ppb (Jan–Dec 2024), against a 15 ppb action level.
Who provides electricity in Spearfish?
Black Hills Energy (Black Hills Power, Inc.), an investor-owned utility. Its homes paid about 15.1¢ per kWh in 2025 (EIA).
What internet providers serve Spearfish?
Wisp West, Celerity Internet, Midco, Bluepeak, CenturyLink, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Spearfish?
57783 (94%), 57799 (6%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Spearfish in?
Spearfish School District 40-2.
How do I register to vote in Spearfish?
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 Lawrence 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: Spearfish’s own website (spearfish.gov), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.