Living in Duncan Ranch Colony, MT: what to set up and who to call
Duncan Ranch Colony has no town government of its own, so Wheatland County runs its elections and most services, and its children attend Harlowton K-12 Schools. Wheatland Memorial Hospital, 8.8 miles away, is the nearest emergency room.
I’m new in town
What to set up in Duncan Ranch Colony, 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 Duncan Ranch Colony.
Water comes from Duncan Ranch Colony water system
The Duncan Ranch Colony water system supplies Duncan Ranch Colony: about 0% of residents live in its service area. About 100% 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 96 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 11,392 systems serving <=100 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 0.0 ppb, below the 15 ppb action level that applied. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. MT0000418.
1 home internet providers serve Duncan Ranch Colony
89% of 9 addresses can get 100/20 Mbps; 89% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Triangle Communications | Fiber | 89% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Duncan Ranch Colony’s trash rules yet
Pickup rules, the dump and recycling in Duncan Ranch Colony.
Where your child goes to school
Public school districts and the school path by grade.
Duncan Ranch Colony is in Harlowton K-12 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.
No town hall: the county runs things
Duncan Ranch Colony is unincorporated, so Wheatland County is the local government.
Election office: FVAP local election office directory, updated Jun 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Duncan Ranch Colony is in ZIP code 59036
ZIP codes where Duncan Ranch Colony residents live, with the share of the town in each.
| ZIP | Post office name | Share of Duncan Ranch Colony | ZIP’s residents in Duncan Ranch Colony |
|---|---|---|---|
| 59036 | Harlowton, MT | 100% | 0% |
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 Duncan Ranch Colony
Who supplies Duncan Ranch Colony’s drinking water, and has it had violations?
The Duncan Ranch Colony water system (EPA ID MT0000418). 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 0.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
What internet providers serve Duncan Ranch Colony?
Triangle Communications (FCC, as of December 2025).
What ZIP codes are in Duncan Ranch Colony?
59036. Census 2020 ZIP Code Tabulation Areas.
What school district is Duncan Ranch Colony in?
Harlowton K-12 Schools.
How do I register to vote in Duncan Ranch Colony?
Montana has no online registration; you can register in person up to and including Election Day or by mail (postmarked 30 days before). Elections here are run by the Wheatland County Election Administrator. Check your registration at prodvoterportal.mt.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.
- 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.