Living in Boulder Hill, IL: what to set up and who to call
Boulder Hill has no town government of its own, so Kendall County runs its elections and most services, and its children attend Oswego Community Unit School District 308. Copley Memorial Hospital, 3.6 miles away, is the nearest emergency room.
I’m new in town
What to set up in Boulder Hill, 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 Boulder Hill.
Power comes from Commonwealth Edison
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility, serves all of Boulder Hill. Its homes paid an average of 17.7¢ per kWh in 2025, about $107 a month (its average across Illinois, for customers on its standard service). Illinois lets you buy power from another supplier; 20% of Commonwealth Edison’s home customers do, and Commonwealth Edison still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Montgomery water system
The Montgomery water system supplies Boulder Hill: about 74% of residents live in its service area. Oswego serves another 25%. It draws ground water and serves 28,956 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 2024–Dec 2026, was 0.0 ppb, below the 15 ppb action level that applied. 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 (EPA’s estimate). Violations are counted by the start of their compliance period. IL0894690.
7 home internet providers serve Boulder Hill
100% of 2,733 addresses can get 100/20 Mbps; 95% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| AT&T | DSL, Fixed wireless | 99% | 75/20 |
| Metronet | Fiber | 97% | 5,120/5,120 |
| T-Mobile | Fixed wireless | 83% | 100/20 |
| Watch Communications | Fixed wireless | 63% | 400/40 |
| Rise Broadband | Fixed wireless | 22% | 50/10 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Boulder Hill’s trash rules yet
Pickup rules, the dump and recycling in Boulder Hill.
Where your child goes to school
Public school districts and the school path by grade.
Boulder Hill is in Oswego Community Unit School District 308.
B+School gradeSee 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
Boulder Hill is unincorporated, so Kendall County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Boulder Hill is in ZIP code 60538
ZIP codes where Boulder Hill residents live, with the share of the town in each.
| ZIP | Post office name | Share of Boulder Hill | ZIP’s residents in Boulder Hill |
|---|---|---|---|
| 60538 | Montgomery, IL | 100% | 29% |
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 Boulder Hill
Who supplies Boulder Hill’s drinking water, and has it had violations?
The Montgomery water system (EPA ID IL0894690). 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 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Boulder Hill?
Commonwealth Edison (Commonwealth Edison Co), an investor-owned utility. Its homes paid about 17.7¢ per kWh in 2025 (EIA).
What internet providers serve Boulder Hill?
Xfinity, AT&T, Metronet, T-Mobile, Watch Communications, Rise Broadband (FCC, as of December 2025).
What ZIP codes are in Boulder Hill?
60538. Census 2020 ZIP Code Tabulation Areas.
What school district is Boulder Hill in?
Oswego Community Unit School District 308.
How do I register to vote in Boulder Hill?
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 Kendall 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.