Illinois Utilities: Who Serves Your Address?
- Gas Varies by address Look up your block for the company name.
- Water Your city or district Water in Illinois is almost always city- or district-run.
- Electric Depends on territory Territory lines decide, your address is the answer.
Free lookup · electricity, gas, water and internet for any Illinois address
20,000+ addresses checked · 555 ZIP codes · updated Jul 2026
Answers come from 684,000+ real provider assignments across the U.S., 20,000+ of them in Illinois. How we verify.
Browse by utility: Electricity
Illinois electricity
State guide focused on the utility where Illinois has a real regulatory story.
Illinois utility coverage
Where each provider led our address-level sampling. Toggle electric, gas, or water, then check your exact address.
It depends on your address, even in Illinois. The map orients you; the lookup names the companies for your block.
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Territories are approximate. Check your exact address with the lookup.
Skip the guesswork
Enter your Illinois address and get your exact electric, gas, water and sewer providers.
Free · electricity, gas, water, internet · about a minute
Illinois by city
City guides with the providers we have on record. Check your own address with the lookup.
Internet providers across 207 Illinois cities
From 19,330 observed Illinois service locations (Jul 2026). "Among the most recorded in" counts cities where that provider was one of the most-recorded.
| Provider | Among the most recorded in |
|---|---|
| Xfinity | 152 of 207 cities |
| AT&T Fiber | 144 of 207 cities |
| Astound Broadband | 37 of 207 cities |
Satellite and fixed-wireless (AT&T Air, Hughesnet Satellite, Viasat Satellite) reach most addresses and are listed separately for that reason.
ComEd north, Ameren south, and three gas companies
ComEd (Commonwealth Edison) delivers electricity to Chicago and most of northern Illinois, and Ameren Illinois covers central and southern Illinois. Illinois has retail supply choice, but the delivery utility that owns your wires and fixes your outages is fixed by address.
Gas is the map most people get wrong: Peoples Gas serves the city of Chicago itself, Nicor Gas serves most of the collar suburbs, and Ameren handles downstate. Water splits between big municipal systems, the City of Chicago's water department serves the city and dozens of suburbs, and Illinois American Water territories.
Illinois utility questions, answered
Is Chicago's electric company ComEd?
Yes. ComEd leads at thousands of Chicago addresses we've checked. Retail supply choice exists in Illinois, but ComEd remains the delivery utility either way.
Peoples Gas or Nicor, which one is mine?
Inside Chicago city limits it's almost always Peoples Gas; in most suburbs it's Nicor. Border towns vary. Check your exact address.
Who provides water in Illinois?
The City of Chicago serves the city and many suburbs wholesale; elsewhere it's your municipality or Illinois American Water. The lookup names your exact system.
Find the providers for your Illinois address
Enter your address and we'll tell you who provides electricity, gas, water and internet there.
Free lookup · electricity, gas, water and internet for any Illinois address
Provider data comes from our address-level utility lookup engine, aggregated from geographically spread sample addresses in each Illinois city. Data refreshed 2026-07-20. Territories vary address by address. Always confirm yours with the lookup. Read how we verify provider data.