State avg
$4.40
▼ $0.11 this week
Cheapest city
Twin Falls
$4.18 avg
Most expensive
Coeur d'Alene
$4.72 avg
vs national avg
+$0.31
Above average
30-day price trend — regular
Idaho avg
Idaho state gas tax: 33¢/gal · Federal tax: 18.4¢/gal · Total tax: ~51¢/gal
Idaho has no refineries and sits far from major pipeline terminals. Most fuel arrives from Washington or Utah refineries via pipeline or tanker truck, adding transport cost. Northern Idaho — Coeur d'Alene and Sandpoint — sometimes rivals Washington state prices. Southern Idaho near Boise sees more competition.
Sources: AAA State Gas Price Averages · EIA Gasoline & Diesel Update
Nearby states
Utah$4.276
Nevada$4.912
Washington$5.513
Oregon$4.995
All states →map