Propane Prices in Idaho
Idaho average residential propane price
$2.63 per gallon
Week of Oct 12, 2026 · EIA value $2.625
- Change vs last week
- ↑ $0.111 (+4.4%)
- Year ago
- $2.31
- Now up 13.6% from a year ago
Compared with other prices this week
- $0.01 below the U.S. average ($2.64)
- $0.34 above the Rocky Mountain average ($2.28)
- Idaho ranks #21 of 38 states (1 = highest price).
Change vs last week: ↑ $0.111 (+4.4%)
Fill a 500-gallon tank
$1,050.00
Fuel only at the EIA average
Typical winter propane bill
$1,962
2,000 sq ft, average insulation (our estimate)
Cold-climate heat pump
$664
About $1,298 less than propane (our estimate)
Cost to fill a propane tank in Idaho
| Tank | Propane at 80% | Fuel cost |
|---|---|---|
| 100-gallon tank | 80 gal | $210.00 |
| 250-gallon tank | 200 gal | $525.00 |
| 500-gallon tank | 400 gal | $1,050.00 |
| 1000-gallon tank | 800 gal | $2,100.00 |
Fuel only at the EIA average price. Delivery fees, taxes and minimum deliveries are extra.
Idaho propane price trend
Weekly EIA averages since October 2025.
Heating cost estimate for a typical Idaho home
A typical Idaho home (2,000 sq ft, average insulation) would use about 747 gallons of propane over the winter, roughly $1,962 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 Idaho
| Fuel | Price used | Fuel needed | Est. winter cost |
|---|---|---|---|
| Heating oil | $6.138/gal (U.S. average) | 476 gallons | $2,919 |
| Propane | $2.625/gal | 747 gallons | $1,962 |
| Natural gas | $0.92/therm | 683 therms | $631 |
| Electric baseboard | $0.127/kWh | 16,023 kWh | $2,030 |
| Cold-climate heat pump | $0.127/kWh | 5,241 kWh | $664 |
Same home, same weather, each fuel at its own efficiency. Gas and electric use 12-month average prices. Estimates only.
Idaho propane prices at a glance
Idaho ranks #21 of 38 states for propane price this week, at $2.63 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 all states · Heating calculators
Frequently asked questions
What is the average propane price in Idaho today?
The average residential propane price in Idaho was $2.63 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 Idaho?
A 500-gallon tank holds about 400 gallons at the standard 80% fill, which is about $1,050.00 at $2.63 per gallon, fuel only.