Propane Prices in Idaho Today
EIA survey of · released Next EIA release: Oct 28, 2026
Last updated
Idaho propane price: $2.586per gallon, excluding taxes
- Down −$0.039 (−1.5%)since Oct 12
- Up +$0.293 (+12.8%)from a year earlier (Oct 20, 2025)
- 2026–27 season so far: high $2.625 (Oct 12), low $2.514 (Oct 5)
EIA survey Oct 19, 2026, released Oct 21, 2026. Source: U.S. Energy Information Administration, weekly propane residential price table.
In the EIA survey of October 19, 2026, residential propane in Idaho averaged $2.586 a gallon, before taxes.
That is 3.9 cents less than on Oct 12.
A year earlier (Oct 20, 2025) it was $2.293, so the price is 12.8% higher now.
Of the 4 Rocky Mountain states in the survey, Idaho has the highest price this week; the Rocky Mountain average is $2.340 and the U.S. average $2.689.
So far in the 2026–27 heating season the price has ranged from $2.514 (Oct 5) to $2.625 (Oct 12).
Propane — weekly Idaho, CSV (12 rows, from 2026-02-02 to 2026-10-19)
Columns: survey_date, area, fuel, price_usd_per_gallon_excl_taxes. Prices are residential, in dollars per gallon ($/gal), excluding taxes. Source: EIA.
Rocky Mountain at a glance
| Area | Price | Survey | Week change | Year change | Season high | Season low |
|---|---|---|---|---|---|---|
| Rocky Mountain(PADD 4) | $2.340 | Oct 19 | +$0.057 | +$0.257 (+12.3%) | $2.340 | $2.192 |
| Coloradoin PADD 4 | $2.362 | Oct 19 | +$0.100 | +$0.249 (+11.8%) | $2.362 | $2.261 |
| Idahoin PADD 4 | $2.586 | Oct 19 | −$0.039 | +$0.293 (+12.8%) | $2.625 | $2.514 |
| Montanain PADD 4 | $2.168 | Oct 19 | +$0.027 | +$0.293 (+15.6%) | $2.168 | $1.914 |
| Utahin PADD 4 | $2.329 | Oct 19 | +$0.036 | +$0.073 (+3.2%) | $2.329 | $2.227 |
Week change is against the survey before; year change against the survey nearest to 52 weeks earlier. Season high and low cover the 2026–27 heating season (October to March). Source: U.S. Energy Information Administration, weekly propane residential price table.
This winter against last winter
Recent weekly surveys
- Oct 19, 2026$2.586
- Oct 12, 2026$2.625
- Oct 5, 2026$2.514
- Mar 30, 2026$2.397
- Mar 23, 2026$2.384
- Mar 16, 2026$2.377
Questions
What is the average propane price in Idaho this week?
$2.586 per gallon in the EIA survey of October 19, 2026, released October 21, 2026. It is a state average for Idaho for residential deliveries and does not include taxes. That is 3.9 cents less than the October 12, 2026 survey.
Is propane more expensive than a year ago in Idaho?
Yes. The October 20, 2025 survey had $2.293, so this week’s price is 12.8% higher.
Is this the price my propane dealer will charge?
Not exactly. EIA publishes average residential prices for whole states and regions, not individual dealers. Your price also depends on taxes (not included here), delivery size, payment terms and any service plan. Use the average as a benchmark when you call for quotes.
How often are propane prices updated?
EIA surveys propane retailers every Monday from October through March and publishes the results on Wednesday. From April to September it surveys once a month. The next release date EIA lists is October 28, 2026.
Where does this propane price come from?
From EIA’s weekly Heating Oil and Propane Update (the State Heating Oil and Propane Program), survey of October 19, 2026, released October 21, 2026. The original table is on eia.gov. This site does not run its own survey or forecast prices; it republishes EIA’s residential prices, which exclude taxes.
How much does it cost to fill a Idaho propane tank at this price?
At $2.586 a gallon, 400 gallons (a 500-gallon tank filled to 80%) costs $1,034.40 before taxes and delivery fees.