Photo: Kswx29 · CC BY 3.0Living in St. Marys, KS: what to set up and who to call
St. Marys runs its own electric utility, City of St Marys. Almost every address in St. Marys can get fiber (100%, by the FCC’s map).
I’m new in town
What to set up in St. Marys, 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. Marys.
Power comes from City of St Marys
City of St Marys (City of St Marys - (KS)), a municipal utility, serves all of St. Marys.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of St Marys water system
The City of St Marys water system supplies St. Marys: about 96% of residents live in its service area. About 4% 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 2,781 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 2024–Dec 2026, was 1.8 ppb, below the 15 ppb action level that applied. That’s higher than 66% 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. KS2014914.
4 home internet providers serve St. Marys
100% of 880 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| WTC Communications | Fiber, Fixed wireless | 100% | 4,000/4,000 |
| Brightspeed | DSL | 89% | 80/10 |
| Mercury Fiber | Fixed wireless | 93% | 150/20 |
| T-Mobile | Fixed wireless | 91% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have St. Marys’ trash rules yet
Pickup rules, the dump and recycling in St. Marys.
Where your child goes to school
Public school districts and the school path by grade.
St. Marys is in Kaw Valley Unified School District 321.
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 Sep 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
St. Marys is in ZIP code 66536
ZIP codes where St. Marys residents live, with the share of the town in each.
| ZIP | Post office name | Share of St. Marys | ZIP’s residents in St. Marys |
|---|---|---|---|
| 66536 | Saint Marys, KS | 100% | 66% |
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. Marys
Who supplies St. Marys’ drinking water, and has it had violations?
The City of St Marys water system (EPA ID KS2014914). 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 1.8 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in St. Marys?
City of St Marys (City of St Marys - (KS)), a municipal utility.
What internet providers serve St. Marys?
WTC Communications, Brightspeed, Mercury Fiber, T-Mobile (FCC, as of December 2025).
What ZIP codes are in St. Marys?
66536. Census 2020 ZIP Code Tabulation Areas.
What school district is St. Marys in?
Kaw Valley Unified School District 321.
How do I register to vote in St. Marys?
In Kansas you can register online until 21 days before Election Day, in person until 21 days before Election Day, or by mail (postmarked 21 days before). Elections here are run by the Pottawatomie County Clerk. Check your registration at myvoteinfo.voteks.org.
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 Nov 18, 2024 (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.