Propane Prices in Illinois
Illinois average residential propane price
$1.90 per gallon
Week of Oct 12, 2026 · EIA value $1.904
- Change vs last week
- ↑ $0.073 (+4.0%)
- Year ago
- $1.73
- Now up 9.9% from a year ago
Compared with other prices this week
- $0.73 below the U.S. average ($2.64)
- $0.21 below the Midwest average ($2.11)
- Illinois ranks #33 of 38 states (1 = highest price).
Change vs last week: ↑ $0.073 (+4.0%)
Cost to fill a propane tank in Illinois
| Tank | Propane at 80% | Fuel cost |
|---|---|---|
| 100-gallon tank | 80 gal | $152.32 |
| 250-gallon tank | 200 gal | $380.80 |
| 500-gallon tank | 400 gal | $761.60 |
| 1000-gallon tank | 800 gal | $1,523.20 |
Fuel only at the EIA average price. Delivery fees, taxes and minimum deliveries are extra.
Illinois propane price trend
Weekly EIA averages since October 2025.
Heating cost estimate for a typical Illinois home
A typical Illinois home (2,000 sq ft, average insulation) would use about 730 gallons of propane over the winter, roughly $1,389 at this week's price. That is an estimate; change the inputs in the calculator.
Assumes 2,000 sq ft, average insulation, AFUE 0.8, and normal October–March weather (NOAA 1991–2020).
Propane vs other heating fuels in Illinois
| Fuel | Price used | Fuel needed | Est. winter cost |
|---|---|---|---|
| Heating oil | $5.866/gal (regional average) | 464 gallons | $2,724 |
| Propane | $1.904/gal | 730 gallons | $1,389 |
| Natural gas | $1.48/therm | 667 therms | $986 |
| Electric baseboard | $0.190/kWh | 15,644 kWh | $2,969 |
| Cold-climate heat pump | $0.190/kWh | 5,375 kWh | $1,020 |
Same home, same weather, each fuel at its own efficiency. Gas and electric use 12-month average prices. Estimates only.
Illinois propane prices at a glance
Illinois ranks #33 of 38 states for propane price this week, at $1.90 per gallon.
Prices come from EIA's weekly survey and do not include taxes or delivery fees. For a full explanation, read our methodology.
Nearby states
- Propane prices in Indiana
- Propane prices in Iowa
- Propane prices in Kentucky
- Propane prices in Missouri
- Propane prices in Wisconsin
Propane prices in all states · Heating calculators
Frequently asked questions
What is the average propane price in Illinois today?
The average residential propane price in Illinois was $1.90 per gallon for the week of Oct 12, 2026, according to the U.S. Energy Information Administration (excluding taxes).
How much does it cost to fill a 500-gallon propane tank in Illinois?
A 500-gallon tank holds about 400 gallons at the standard 80% fill, which is about $761.60 at $1.90 per gallon, fuel only.