Photo: Dual Freq · CC BY 2.5Living in Illiopolis, IL: what to set up and who to call
The Illiopolis water system reported 2 health-based violations to EPA in the last five years: disinfection byproducts (TTHM) ×2. 78% of systems its size reported none. The ER is a drive from Illiopolis: the closest is Decatur Memorial Hospital, 15.5 miles away.
I’m new in town
What to set up in Illiopolis, 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 Illiopolis.
Power comes from Ameren Illinois Company
Ameren Illinois Company (Ameren Illinois Company), an investor-owned utility, serves all of Illiopolis. Its homes paid an average of 16.7¢ per kWh in 2025, about $148 a month (its average across Illinois, for customers on its standard service). Illinois lets you buy power from another supplier; 45% of Ameren Illinois Company’s home customers do, and Ameren Illinois Company still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Illiopolis water system
The Illiopolis water system supplies almost all of Illiopolis. It buys treated ground water (EPA lists United Regional Water Coop as seller) and serves 1,037 people in all.
2 health-based violations reported to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×2, the latest beginning Apr 2022. 78% of the 7,966 systems serving 1,001–3,300 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2026–Dec 2028, was 1.5 ppb, below the 15 ppb action level that applied. The highest in five years was 4.2 ppb. That’s higher than 63% 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. IL1670550.
7 home internet providers serve Illiopolis
100% of 439 addresses can get 100/20 Mbps; 80% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 1,200/35 |
| Conxxus | Fiber | 76% | 8,000/8,000 |
| Frontier | DSL, Fiber | 76% | 70/3 |
| Rise Broadband | Fixed wireless | 68% | 25/5 |
| Verizon | Fixed wireless | 62% | 300/20 |
| AT&T | Fixed wireless | 29% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Illiopolis’ trash rules yet
Pickup rules, the dump and recycling in Illiopolis.
Where your child goes to school
Public school districts and the school path by grade.
Illiopolis is in Sangamon Valley Community Unit School District 9.
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 Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Illiopolis is in ZIP code 62539
ZIP codes where Illiopolis residents live, with the share of the town in each.
| ZIP | Post office name | Share of Illiopolis | ZIP’s residents in Illiopolis |
|---|---|---|---|
| 62539 | Illiopolis, IL | 100% | 67% |
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 Illiopolis
Who supplies Illiopolis’ drinking water, and has it had violations?
The Illiopolis water system (EPA ID IL1670550). It reported 2 health-based violations to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×2. 78% of systems its size had none. Its latest lead 90th percentile was 1.5 ppb (Jan 2026–Dec 2028), against a 15 ppb action level.
Who provides electricity in Illiopolis?
Ameren Illinois Company (Ameren Illinois Company), an investor-owned utility. Its homes paid about 16.7¢ per kWh in 2025 (EIA).
What internet providers serve Illiopolis?
Xfinity, Conxxus, Frontier, Rise Broadband, Verizon, AT&T (FCC, as of December 2025).
What ZIP codes are in Illiopolis?
62539. Census 2020 ZIP Code Tabulation Areas.
What school district is Illiopolis in?
Sangamon Valley Community Unit School District 9.
How do I register to vote in Illiopolis?
In Illinois you can register online until 16 days before Election Day, in person up to and including Election Day, or by mail (postmarked 28 days before). Elections here are run by the Sangamon County Clerk. Check your registration at ova.elections.il.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 Sep 12, 2025 (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.