Propane prices in Idaho this week
Propane in Idaho averaged $2.90 a gallon in the week of Nov 2, 2026, up 21.6¢ from the week before. That is $0.08 above the US average of $2.82, and 26% higher than a year ago ($2.31).
Propane price in Idaho 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 |
|---|---|---|---|
| Boise | 606 gal | $1,759 | $628 |
Space heating only, 95% efficient furnace. Change home size, insulation and prices in the calculator.
How Idaho compares
Idaho ranks #20 of 38 surveyed states for propane prices this week (1 = most expensive). See every state.
Frequently asked questions
How much is propane in Idaho right now?
The average residential propane price in Idaho was $2.90 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 Idaho?
A 500-gallon tank is filled to 80%, so a fill from 20% is about 300 gallons. At $2.90 a gallon that is about $871 before taxes and delivery fees.
Is propane more expensive than last year in Idaho?
Yes. A year ago the average was $2.31, so prices are 26% 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.