Living in Hennessey, OK: what to set up and who to call
The Hennessey water system reported one health-based violation to EPA in the last five years: nitrate-nitrite, beginning Jan 2022. For an emergency, Mercy Hospital Kingfisher is the closest ER, 17.7 miles away.
I’m new in town
What to set up in Hennessey, 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 Hennessey.
Power comes from OG&E
OG&E (Oklahoma Gas & Electric Co.), an investor-owned utility, serves all of Hennessey. Its homes paid an average of 12.5¢ per kWh in 2025, about $131 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 Hennessey water system
The Hennessey water system supplies almost all of Hennessey. It draws ground water and serves 2,058 people in all.
1 health-based violation reported to EPA in the five years to October 2026: nitrate-nitrite, beginning Jan 2022. 78% of the 7,966 systems serving 1,001–3,300 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2025, was 1.0 ppb, below the 15 ppb action level that applied. The highest in five years was 1.2 ppb. That’s lower than 52% 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. OK2003704.
6 home internet providers serve Hennessey
100% of 990 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Pioneer Telephone Cooperative | Fiber, DSL | 100% | 1,000/1,000 |
| AT&T | Fixed wireless | 89% | 100/20 |
| Verizon | Fixed wireless | 85% | 300/20 |
| Chisholm Broadband | Fixed wireless | 14% | 100/40 |
| T-Mobile | Fixed wireless | 14% | 100/20 |
| Nextlink | Fixed wireless | 6% | 500/100 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash and recycling in Hennessey
Pickup days, the drop-off and recycling in Hennessey, from the town’s own site.
Town Dump
- Fri9 am–4 pm
- Sat9 am–4 pm
From hennesseyok.org, the town’s official site, checked Oct 21, 2026. 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.
Hennessey is in Hennessey Public Schools.
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 Feb 2018; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Hennessey is in ZIP code 73742
ZIP codes where Hennessey residents live, with the share of the town in each.
| ZIP | Post office name | Share of Hennessey | ZIP’s residents in Hennessey |
|---|---|---|---|
| 73742 | Hennessey, OK | 100% | 55% |
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 Hennessey
Who supplies Hennessey’s drinking water, and has it had violations?
The Hennessey water system (EPA ID OK2003704). It reported 1 health-based violation to EPA in the five years to October 2026: nitrate-nitrite. 78% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan–Dec 2025), against a 15 ppb action level.
Who provides electricity in Hennessey?
OG&E (Oklahoma Gas & Electric Co.), an investor-owned utility. Its homes paid about 12.5¢ per kWh in 2025 (EIA).
What internet providers serve Hennessey?
Pioneer Telephone Cooperative, AT&T, Verizon, Chisholm Broadband, T-Mobile, Nextlink (FCC, as of December 2025).
What ZIP codes are in Hennessey?
73742. Census 2020 ZIP Code Tabulation Areas.
What school district is Hennessey in?
Hennessey Public Schools.
How do I register to vote in Hennessey?
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, Kingfisher 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: Hennessey’s own website (hennesseyok.org), 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 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.