BOISE, October 26 -
Oregon vs Idaho gas prices
In the week of October 26, 2026 the EIA district covering Oregon read $4.87 per gallon and the district covering Idaho $4.46, a $0.41 gap. On a 26-gallon pickup that is $10.66 a fill, if your local pumps track their districts. [EIA · 26 Oct 2026]
What the federal survey settles here. Neither state is surveyed individually. Oregon carries West Coast less California and Idaho carries Rocky Mountain (PADD 4), so the gap below is a difference between two federal districts, not between two states. Week of October 26, 2026.
Why Oregon costs more
- Oregon Clean Fuels Program: ~5-15 cents/gal LCFS-equivalent.
- Oregon excise 40 c/gal vs Idaho 33 c/gal: 7-cent gap.
- Oregon rack feeds from Pacific Northwest refining; Idaho feeds from Salt Lake.
- Oregon's full-service mandate, though relaxed in 2023, still affects station economics.
The Ontario / Boise corridor
I-84 between Ontario, Oregon and Boise, Idaho crosses the state line at the Oregon-Idaho border. For Ontario residents commuting toward Idaho, filling on the Idaho side is consistently the cheaper option.
Related
OR · ID · border comparator