Photo: Nyttend · Public domainLiving in St. Clair Township, OH: what to set up and who to call
Most mail in St. Clair Township goes to 45011 (54% of residents), one of 5 ZIP codes in town. The closest ER is Fort Hamilton Hughes Memorial Hospital, 3.1 miles away.
I’m new in town
What to set up in St. Clair Township, 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 St. Clair Township.
Power comes from Duke Energy
Duke Energy (Duke Energy Ohio, Inc.), an investor-owned utility, serves all of St. Clair Township. Its homes paid an average of 16.8¢ per kWh in 2025, about $154 a month (its average across Ohio, for customers on its standard service). Ohio lets you buy power from another supplier; 60% of Duke Energy’s home customers do, and Duke Energy still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from New Miami Village PWS
New Miami Village PWS supplies St. Clair Township: about 41% of residents live in its service area. Southwest Regional Water District serves another 32%. Hamilton Public Water System serves another 13%. About 12% 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 3,200 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 2025, was 1.1 ppb, below the 15 ppb action level that applied. The highest in five years was 1.9 ppb. That’s higher than 54% 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 (EPA’s estimate). Violations are counted by the start of their compliance period. OH0902112.
6 home internet providers serve St. Clair Township
98% of 2,997 addresses can get 100/20 Mbps; 91% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 91% | 1,000/1,000 |
| altafiber | Fiber, DSL | 89% | 3,000/3,000 |
| AT&T | Fixed wireless, DSL | 54% | 25/3 |
| Verizon | Fixed wireless | 75% | 300/20 |
| T-Mobile | Fixed wireless | 35% | 100/20 |
| Watch Communications | Fixed wireless | 12% | 400/40 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have St. Clair Township’s trash rules yet
Pickup rules, the dump and recycling in St. Clair Township.
Where your child goes to school
Public school districts and the school path by grade.
Most of St. Clair Township (63%) is in Edgewood City School District; parts are in New Miami Local School District (30%) and Ross Local School District (7%).
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 Dec 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
St. Clair Township spans 5 ZIP codes
ZIP codes where St. Clair Township residents live, with the share of the town in each.
| ZIP | Post office name | Share of St. Clair Township | ZIP’s residents in St. Clair Township |
|---|---|---|---|
| 45011 | Hamilton, OH | 54% | 5% |
| 45013 | Hamilton, OH | 36% | 4% |
| 45067 | Trenton, OH | 5% | 2% |
| 45062 | Seven Mile, OH | 4% | 32% |
| 45055 | Overpeck, OH | 1% | 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 St. Clair Township
Who supplies St. Clair Township’s drinking water, and has it had violations?
New Miami Village PWS (EPA ID OH0902112). 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 1.1 ppb (Jan–Dec 2025), against a 15 ppb action level.
Who provides electricity in St. Clair Township?
Duke Energy (Duke Energy Ohio, Inc.), an investor-owned utility. Its homes paid about 16.8¢ per kWh in 2025 (EIA).
What internet providers serve St. Clair Township?
Spectrum, altafiber, AT&T, Verizon, T-Mobile, Watch Communications (FCC, as of December 2025).
What ZIP codes are in St. Clair Township?
45011 (54%), 45013 (36%), 45067 (5%), 45062 (4%), 45055 (1%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is St. Clair Township in?
Edgewood City School District. Parts of the city are in New Miami Local School District and Ross Local School District.
How do I register to vote in St. Clair Township?
In Ohio you can register online until 30 days before Election Day, in person until 30 days before Election Day, or by mail (postmarked 30 days before). Elections here are run by the Director, Butler County Board of Elections. Check your registration at voterlookup.ohiosos.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.