Photo: Robert Lawton · CC BY-SA 2.5Living in O'Fallon, IL: what to set up and who to call
Two school districts split the grades in O'Fallon: O'Fallon Township High School District 203 and O'Fallon Community Consolidated School District 90. HSHS St. Elizabeth's Hospital, 1.5 miles away, is the nearest emergency room.
I’m new in town
What to set up in O'Fallon, 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 O'Fallon.
Power comes from Ameren Illinois Company
Ameren Illinois Company (Ameren Illinois Company), an investor-owned utility, serves all of O'Fallon. 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 O Fallon water system
The O Fallon water system supplies O'Fallon: about 89% 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 buys treated surface water (EPA lists Il American-East St Louis as seller) and serves 46,603 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2026–Dec 2028, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 2.2 ppb. 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. IL1631100.
6 home internet providers serve O'Fallon
99% of 11,398 addresses can get 100/20 Mbps; 36% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 97% | 1,000/1,000 |
| AT&T | DSL, Fixed wireless, Fiber | 90% | 1,000/1,000 |
| i3 Broadband | Fiber | 24% | 8,000/8,000 |
| T-Mobile | Fixed wireless | 66% | 100/20 |
| Verizon | Fixed wireless | 52% | 300/20 |
| Wisper | Fixed wireless | 38% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash and recycling in O'Fallon
Pickup days, the drop-off and recycling in O'Fallon, from the town’s own site.
We couldn’t find pickup days or drop-off hours. Check ofallon.org →
From ofallon.org, the town’s official site, checked Oct 21, 2026. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
O'Fallon is in two districts that split the grades: O'Fallon Township High School District 203 and O'Fallon Community Consolidated School District 90.
A−School gradeSee 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 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
O'Fallon spans 2 ZIP codes
ZIP codes where O'Fallon residents live, with the share of the town in each.
| ZIP | Post office name | Share of O'Fallon | ZIP’s residents in O'Fallon |
|---|---|---|---|
| 62269 | O Fallon, IL | 97% | 87% |
| 62208 | Fairview Heights, IL | 2% | 3% |
A few homes fall in 62254.
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 O'Fallon
Who supplies O'Fallon’s drinking water, and has it had violations?
The O Fallon water system (EPA ID IL1631100). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2026–Dec 2028), against a 15 ppb action level.
Who provides electricity in O'Fallon?
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 O'Fallon?
Spectrum, AT&T, i3 Broadband, T-Mobile, Verizon, Wisper (FCC, as of December 2025).
What ZIP codes are in O'Fallon?
62269 (97%), 62208 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is O'Fallon in?
O'Fallon Township High School District 203 and O'Fallon Community Consolidated School District 90. Parts of the city are in Central School District 104 and Mascoutah Community Unit School District 19.
How do I register to vote in O'Fallon?
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 St. Clair 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: O'Fallon’s own website (ofallon.org), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.