Find Natural Gas Prices

Nicor Gas Prices
"As a regulated utility, Nicor Gas does not profit from the sale of natural gas. The price we pay for gas is passed onto our customers without markup."
-- From Nicor Gas 

Peoples Gas Prices
Peoples Energy combines Peoples Gas and North Shore Gas, serving Chicago and communities in northeastern Illinois.
-- From Peoples Energy 

You Can Pick Your Own Gas Supplier
In Illinois, you can pick your own gas supplier from the list of suppliers certified by the state of Illinois.
-- From Illinois Consumer Commission 

EIA's Natural Gas Prices for Illinois
The Energy Information Administration (EIA) collects average price of natural gas sold to residential customers (including taxes) as part of its National Energy Information Center.
-- From U.S. Department of Energy 

Natural Gas Spot Prices Chart
The spot price is the wholesale price for Natural Gas if you want to buy it today.
-- From ChicagoGasPrices.com