Living in Custer City, OK: what to set up and who to call
Custer City PWS has a clean five-year EPA record, but its latest lead result, 6.5 ppb, was higher than 94% of similar systems’ (the action level is 15). Power in Custer City comes from CKenergy Electric Cooperative, a cooperative utility rather than a private company.
I’m new in town
What to set up in Custer City, 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 Custer City.
Power comes from CKenergy Electric Cooperative
CKenergy Electric Cooperative (CKenergy Electric Cooperative), a cooperative utility, serves all of Custer City. Its homes paid an average of 13.8¢ per kWh in 2025, about $138 a month (its average across Oklahoma).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Custer City PWS
Custer City PWS supplies almost all of Custer City. It draws ground water and serves 393 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 2021–Dec 2023, was 6.5 ppb, below the 15 ppb action level that applied. That’s higher than 94% 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. OK2002009.
4 home internet providers serve Custer City
78% of 228 addresses can get 100/20 Mbps; 1% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Pioneer Telephone Cooperative | DSL, Fiber | 95% | 46/7 |
| Verizon | Fixed wireless | 79% | 300/20 |
| T-Mobile | Fixed wireless | 73% | 100/20 |
| Hudson Technology Solutions | Fixed wireless | 15% | 500/250 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Custer City’s trash rules yet
Pickup rules, the dump and recycling in Custer City.
Where your child goes to school
Public school districts and the school path by grade.
Custer City is in Thomas-Fay-Custer Unified Schools.
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 Feb 2018; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Custer City is in ZIP code 73639
ZIP codes where Custer City residents live, with the share of the town in each.
| ZIP | Post office name | Share of Custer City | ZIP’s residents in Custer City |
|---|---|---|---|
| 73639 | Custer City, OK | 100% | 54% |
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 Custer City
Who supplies Custer City’s drinking water, and has it had violations?
Custer City PWS (EPA ID OK2002009). 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 6.5 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Custer City?
CKenergy Electric Cooperative (CKenergy Electric Cooperative), a cooperative utility. Its homes paid about 13.8¢ per kWh in 2025 (EIA).
What internet providers serve Custer City?
Pioneer Telephone Cooperative, Verizon, T-Mobile, Hudson Technology Solutions (FCC, as of December 2025).
What ZIP codes are in Custer City?
73639. Census 2020 ZIP Code Tabulation Areas.
What school district is Custer City in?
Thomas-Fay-Custer Unified Schools.
How do I register to vote in Custer City?
In Oklahoma you can register online until 25 days before Election Day, in person until 25 days before Election Day, or by mail (received 25 days before). Elections here are run by the Secretary, Custer County Election Board. Check your registration at okvoterportal.okelections.us.
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.