Living in Green Castle, MO: what to set up and who to call
Green Castle PWS has a clean five-year EPA record, but its latest lead result, 9.9 ppb, was higher than 97% of similar systems’ (the action level is 15). Power in Green Castle comes from North Central MO Elec Coop, a cooperative utility rather than a private company.
I’m new in town
What to set up in Green Castle, 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 Green Castle.
Power comes from North Central MO Elec Coop
North Central MO Elec Coop (North Central MO Elec Coop Inc), a cooperative utility, serves all of Green Castle.
Start or move service: ncmec.coop
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Green Castle PWS
Green Castle PWS supplies almost all of Green Castle. It buys treated surface water (EPA lists Green City PWS as seller) and serves 212 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 2022–Dec 2024, was 9.9 ppb, below the 15 ppb action level that applied. That’s higher than 97% 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. MO2010328.
1 home internet providers serve Green Castle
100% of 145 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Northeast Missouri Rural Telephone Company | Fiber | 100% | 1,000/1,000 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Green Castle’s trash rules yet
Pickup rules, the dump and recycling in Green Castle.
Where your child goes to school
Public school districts and the school path by grade.
Green Castle is in Green City R-I School District.
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 Aug 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Green Castle is in ZIP code 63544
ZIP codes where Green Castle residents live, with the share of the town in each.
| ZIP | Post office name | Share of Green Castle | ZIP’s residents in Green Castle |
|---|---|---|---|
| 63544 | Green Castle, MO | 100% | 28% |
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 Green Castle
Who supplies Green Castle’s drinking water, and has it had violations?
Green Castle PWS (EPA ID MO2010328). 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 9.9 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Green Castle?
North Central MO Elec Coop (North Central MO Elec Coop Inc), a cooperative utility.
What internet providers serve Green Castle?
Northeast Missouri Rural Telephone Company (FCC, as of December 2025).
What ZIP codes are in Green Castle?
63544. Census 2020 ZIP Code Tabulation Areas.
What school district is Green Castle in?
Green City R-I School District.
How do I register to vote in Green Castle?
In Missouri you can register online until 27 days before Election Day, in person until 27 days before Election Day, or by mail (postmarked 27 days before). Elections here are run by the Sullivan. Check your registration at voteroutreach.sos.mo.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 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.