Illinois Utilities: Who Serves Your Address?
- Gas Nicor Gas The most common Illinois answer. Confirm your street.
- Water Your city or district Water in Illinois is almost always city- or district-run.
- Electric Village of Winnetka Leads our Illinois checks, territory lines decide.
Free lookup · electric, gas, water & sewer 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.
Check my addressCity-by-city guides for Illinois are coming soon. The address lookup already covers every Illinois address.
Territories are approximate. Check your exact address with the lookup.
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Enter your Illinois address and get your exact electric, gas, water and sewer providers.
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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.
Get the lineup for your exact Illinois address
Type the street. We return electric, gas, water and sewer for that block.
Free lookup · electric, gas, water & sewer for any Illinois address
Provider territories on this page come from our address-level mapping database (geographically spread sample addresses across Illinois), not from the live lookup engine's city summaries. Data refreshed 2026-07-22. Territories vary address by address. Always confirm yours with the lookup. Read how we verify provider data.