Spirit Lake Massacre Log Cabin · Photo: C.h.carroll at English Wikipedia · Public domainLiving in Okoboji, IA: what to set up and who to call
Tap water in most of Okoboji comes from Okoboji Water Supply, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result of 1.0 ppb. Lakes Regional Healthcare, 2.1 miles away, is the nearest emergency room.
I’m new in town
What to set up in Okoboji, 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 Okoboji.
Power comes from Interstate Power and Light
Interstate Power and Light (Interstate Power and Light Co), an investor-owned utility, serves all of Okoboji. 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.
Water comes from Okoboji Water Supply
Okoboji Water Supply supplies Okoboji: about 88% of residents live in its service area. Central Water System serves another 9%. It buys treated surface water (EPA lists Central Water System as seller) and serves 776 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 5,327 systems serving 501–1,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 1.0 ppb, below the 15 ppb action level that applied. That’s lower than 51% 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. IA3060091.
9 home internet providers serve Okoboji
100% of 870 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Premier Communications | Fiber | 100% | 1,000/1,000 |
| Mediacom Xtream | Cable, Fiber | 99% | 1,000/50 |
| CenturyLink | DSL | 22% | 10/1 |
| GigFire | Fixed wireless | 60% | 150/130 |
| Verizon | Fixed wireless | 38% | 300/20 |
| Federated Rural Electric Association | Fixed wireless | 34% | 40/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Okoboji’s trash rules yet
Pickup rules, the dump and recycling in Okoboji.
Where your child goes to school
Public school districts and the school path by grade.
Most of Okoboji (68%) is in Okoboji Community School District; parts are in Spirit Lake Community School District (32%).
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 Nov 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Okoboji is in ZIP code 51355
ZIP codes where Okoboji residents live, with the share of the town in each.
| ZIP | Post office name | Share of Okoboji | ZIP’s residents in Okoboji |
|---|---|---|---|
| 51355 | Okoboji, IA | 100% | 91% |
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 Okoboji
Who supplies Okoboji’s drinking water, and has it had violations?
Okoboji Water Supply (EPA ID IA3060091). 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 1.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Okoboji?
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 Okoboji?
Premier Communications, Mediacom Xtream, CenturyLink, GigFire, Verizon, Federated Rural Electric Association (FCC, as of December 2025).
What ZIP codes are in Okoboji?
51355. Census 2020 ZIP Code Tabulation Areas.
What school district is Okoboji in?
Okoboji Community School District. Parts of the city are in Spirit Lake Community School District.
How do I register to vote in Okoboji?
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 Dickinson County Auditor. Check your registration at sos.iowa.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.