Photo: Joni Yager · CC BY-SA 3.0Living in Delmar, IA: what to set up and who to call
Every home in Delmar is in ZIP code 52037. Maquoketa Public Library, 5.7 miles away, is the closest library to Delmar.
I’m new in town
What to set up in Delmar, 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 Delmar.
Power comes from Interstate Power and Light
Interstate Power and Light (Interstate Power and Light Co), an investor-owned utility, serves all of Delmar. 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 Delmar Water Supply
Delmar Water Supply supplies Delmar: about 90% of residents live in its service area. About 10% 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 542 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 2.0 ppb, below the 15 ppb action level that applied. That’s higher than 70% 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. IA2328024.
7 home internet providers serve Delmar
100% of 258 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| F&B Communications | Fiber | 100% | 2,000/2,000 |
| Kinetic | DSL | 98% | 200/20 |
| Nextlink | Fixed wireless | 60% | 100/20 |
| Grand Mound Communications | Fixed wireless | 18% | 25/3 |
| Verizon | Fixed wireless | 14% | 25/6 |
| T-Mobile | Fixed wireless | 7% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Delmar’s trash rules yet
Pickup rules, the dump and recycling in Delmar.
Where your child goes to school
Public school districts and the school path by grade.
Delmar is in Delwood 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.
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.
Delmar is in ZIP code 52037
ZIP codes where Delmar residents live, with the share of the town in each.
| ZIP | Post office name | Share of Delmar | ZIP’s residents in Delmar |
|---|---|---|---|
| 52037 | Delmar, IA | 100% | 45% |
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 Delmar
Who supplies Delmar’s drinking water, and has it had violations?
Delmar Water Supply (EPA ID IA2328024). 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 2.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Delmar?
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 Delmar?
F&B Communications, Kinetic, Nextlink, Grand Mound Communications, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Delmar?
52037. Census 2020 ZIP Code Tabulation Areas.
What school district is Delmar in?
Delwood Community School District.
How do I register to vote in Delmar?
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 Clinton 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.