Propane prices in Illinois this week
Propane in Illinois averaged $2.00 a gallon in the week of Nov 2, 2026, up 4.7¢ from the week before. That is $0.82 below the US average of $2.82, and 15% higher than a year ago ($1.73).
Propane price in Illinois since Sep 9, 2024
Weekly from October to March; monthly in spring and summer. Dollars per gallon, excluding taxes.
What this price means for a typical home
Heating a 2,000 sq ft home with average insulation at this week's price:
| City | Propane used / yr | Cost at this price | Heat pump instead |
|---|---|---|---|
| Chicago | 650 gal | $1,297 | $965 |
Space heating only, 95% efficient furnace. Change home size, insulation and prices in the calculator.
How Illinois compares
Illinois ranks #35 of 38 surveyed states for propane prices this week (1 = most expensive). See every state.
Frequently asked questions
How much is propane in Illinois right now?
The average residential propane price in Illinois was $2.00 per gallon in the week of Nov 2, 2026, excluding taxes, according to the US Energy Information Administration's weekly survey.
How much does it cost to fill a propane tank in Illinois?
A 500-gallon tank is filled to 80%, so a fill from 20% is about 300 gallons. At $2.00 a gallon that is about $599 before taxes and delivery fees.
Is propane more expensive than last year in Illinois?
Yes. A year ago the average was $1.73, so prices are 15% higher now.
Source: US Energy Information Administration, Heating Oil and Propane Update, residential prices excluding taxes. Your dealer's price will differ with volume, contract type and delivery area. Updated Nov 2, 2026.