State prices
Above normalIdaho propane prices
Current residential price: $2.686/gal. EIA weekly survey (October-March).
Data through Oct 26, 2026 · source last checked Oct 31, 2026 · page revised Oct 29, 2026
Cite
- Residential
About this data
- Source
- EIA State Heating Oil and Propane Program survey
- Series
- Residential retail propane price
- Basis
- Residential, retail
- Geography
- Idaho
- Unit
- $/gal
- Calculation
- Weekly survey, Oct-Mar heating season
- Last observation
- Oct 26, 2026
- Update frequency
- Weekly, Oct-Mar
Now $2.686/gal, 15.9% above the 5-yr median.
Idaho residential propane is $2.686/gal as of the week ending October 26, running 15.9% above the 5-year median for the period.
| Period | Current | Prior | Change |
|---|---|---|---|
| Week over week | $2.686/gal | $2.586/gal | +3.9% |
| Year over year | $2.686/gal | $2.312/gal | +16.2% |
| vs 5-yr median | $2.686/gal | $2.318/gal | +15.9% |
| Heating season | Weeks | Average | Low (week) | High (week) | vs Rocky Mountain average |
|---|---|---|---|---|---|
| 2026-27 (so far) | 4 | $2.603/gal | $2.514/gal (Oct 5) | $2.686/gal (Oct 26) | +30.5 cents |
| 2025-26 | 26 | $2.363/gal | $2.293/gal (Oct 20) | $2.427/gal (Feb 2) | +17.2 cents |
| 2024-25 | 26 | $2.495/gal | $2.318/gal (Oct 7) | $2.631/gal (Jan 20) | +21.2 cents |
| 2023-24 | 26 | $2.483/gal | $2.265/gal (Oct 30) | $2.668/gal (Mar 25) | +22.9 cents |
| 2022-23 | 26 | $2.648/gal | $2.509/gal (Oct 17) | $2.769/gal (Feb 27) | +16.9 cents |
| 2021-22 | 26 | $2.687/gal | $2.426/gal (Oct 4) | $2.870/gal (Mar 14) | +15.8 cents |
Each season runs October through March. The average is the simple mean of that season's weekly readings, and the low and high name their survey week. The last column is Idaho's residential price minus the Rocky Mountain residential average over the same weeks, per gallon.
| Measure | Value |
|---|---|
| Homes heating with propane | 37,949 |
| Share of occupied homes | 5.3% |
| Occupied homes (all fuels) | 713,005 |
| National rank by propane share | #26 of 51 |
Previous weeks
Week of Oct 19, 2026
Idaho residential propane reached $2.586/gal for the week ending October 19, down 1.5% from the prior week. The price stands 8.8% above the 5-year median and 12.8% above a year ago.
Week of Oct 12, 2026
Idaho residential propane hit $2.625/gal as of October 12, up 4.4% on the week. The price is 9.6% above the five-year median.
Week of Oct 5, 2026
Idaho residential propane stands at $2.514/gal for the week of October 5, up 6.4% from $2.362/gal a year ago. The price sits 6.4% above the 5-yr median.
Week of Mar 30, 2026
Idaho residential propane was $2.397/gal in the March 30 survey, 10.8% below the 4-yr median. Year-over-year prices were down 7.7%.
About Idaho propane prices
Idaho produces no propane of its own. Supply arrives by pipeline and rail from Rockies gas plants and from Canada, over distances that put real freight into the delivered price in the mountain counties. Demand is spread thin across farm country in the south and rural and resort towns in the north, on a heating season that runs long at elevation.
EIA builds this number by calling retail dealers in Idaho each week of the October to March heating season and averaging what they report, published Wednesday afternoon. The survey stops for the summer and picks back up in October. EIA publishes no wholesale price for Idaho, so the chart carries the residential line alone. The wholesale series runs at the regional level instead, on the Rocky Mountain price page. The Census Bureau's American Community Survey, on five-year estimates, puts propane as the main heating fuel in 5.3% of occupied Idaho homes, around the middle of the state rankings.
Idaho reports into EIA's Rocky Mountain district, so the wider read is Rocky Mountain propane prices and the Rockies and West Coast inventory behind them. The propane usage calculator will estimate your fill cost at this price: gallons per burner-hour from an appliance's rating, gallons a year, and how long a tank of a given size lasts between deliveries.
Common questions
What is the current propane price in Idaho?
Idaho's residential propane price is $2.686/gal as of Oct 26, 2026, the latest reading in EIA's weekly heating-season survey. The chart above carries the full history and the table shows the week-over-week move.
When is propane most expensive in Idaho?
In EIA's weekly survey, which runs October through March, Idaho's residential price set its season high in February in two of the last five heating seasons, March in two and January in one. The season low came in October in each of the last five heating seasons. From low to high the price moved an average of 31.1 cents a season, and the table above lists each season's high and low week. The regional wrinkle is that Rocky Mountain demand is spread thin across mountain counties and high plains, where the heating season runs long and a delivery route can be a long one. Why propane prices rise in winter has the mechanics.
How does the Idaho propane price compare with the Rocky Mountain average?
Idaho's residential propane price averaged above the Rocky Mountain average in each of the last five heating seasons, by between 15.8 cents and 22.9 cents a gallon. In the Oct 26, 2026 survey Idaho was at $2.686/gal against $2.377/gal for the Rocky Mountain average. The seasons table above gives the gap season by season, and Rocky Mountain propane prices carries the district's own chart.
Why is there no wholesale propane price for Idaho?
EIA publishes no state-level wholesale (rack) price for Idaho, so the chart above carries the residential line alone. The wholesale series runs at the regional level instead, on the Rocky Mountain price page, and the Mont Belvieu spot price is the national wholesale benchmark. How propane is priced walks through the delivered-service stack that separates a rack gallon from a delivered one.