Living in Green Mountain, IA: what to set up and who to call
Green Mountain has no town government of its own, so Marshall County runs its elections and most services, and its children attend GMG Community School District. Unitypoint Health - Marshalltown, 5.5 miles away, is the nearest emergency room.
I’m new in town
What to set up in Green Mountain, 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 Mountain.
Power comes from Interstate Power and Light
Interstate Power and Light (Interstate Power and Light Co), an investor-owned utility, serves all of Green Mountain. Its homes paid an average of 17.8¢ per kWh in 2025, about $131 a month (its average across Iowa).
Start or move service: alliantenergy.com · (319) 786-4411
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
3 home internet providers serve Green Mountain
100% of 76 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Heart of Iowa Communications Cooperative | Fiber | 100% | 1,000/1,000 |
| Mediacom Xtream | Cable | 87% | 1,000/50 |
| Mediacom Bolt | Fixed wireless | 54% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Green Mountain’s trash rules yet
Pickup rules, the dump and recycling in Green Mountain.
Where your child goes to school
Public school districts and the school path by grade.
Green Mountain is in GMG Community 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.
No town hall: the county runs things
Green Mountain is unincorporated, so Marshall County is the local government.
Election office: FVAP local election office directory, updated Apr 2026; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Green Mountain spans 2 ZIP codes
ZIP codes where Green Mountain residents live, with the share of the town in each.
| ZIP | Post office name | Share of Green Mountain | ZIP’s residents in Green Mountain |
|---|---|---|---|
| 50632 | Garwin, IA | 90% | 10% |
| 50158 | Marshalltown, IA | 10% | 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 Green Mountain
Who provides electricity in Green Mountain?
Interstate Power and Light (Interstate Power and Light Co), an investor-owned utility. Its homes paid about 17.8¢ per kWh in 2025 (EIA).
What internet providers serve Green Mountain?
Heart of Iowa Communications Cooperative, Mediacom Xtream, Mediacom Bolt (FCC, as of December 2025).
What ZIP codes are in Green Mountain?
50632 (90%), 50158 (10%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Green Mountain in?
GMG Community School District.
How do I register to vote in Green Mountain?
In Iowa you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before). Elections here are run by the Marshall County Auditor. Check your registration at sos.iowa.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- 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.