Statewide average updated daily • Source: AAA
Idaho gas prices typically run modestly above the national average, influenced by distance from major refining centers, a moderate tax rate, and the geographic challenges of supplying fuel to a state with significant mountain terrain and scattered population centers. Boise and the Treasure Valley have the most competitive prices in the state while northern Idaho around Coeur d’Alene and the remote central Idaho mountain communities face higher prices due to longer supply distances. Idaho receives much of its fuel from refineries in Washington State and the Billings, Montana corridor.
Idaho’s state gas tax is approximately 33 cents per gallon, near the national median. The state has a flat-rate structure without variable components.
Idaho has no oil refining capacity of its own and relies entirely on imported refined fuel, primarily from refineries in the Puget Sound area of Washington State via pipeline and from the Billings, Montana corridor. Boise benefits from reasonable pipeline access that keeps the Treasure Valley reasonably well supplied and competitively priced for the region.
Northern Idaho around Coeur d’Alene is influenced by Spokane, Washington area fuel pricing and infrastructure, which provides decent supply access. Central Idaho — particularly the Frank Church River of No Return Wilderness area and surrounding communities — has some of the most remote and expensive fuel markets in the continental United States, with towns accessible only by small aircraft or long mountain roads where fuel must be flown in by small plane to some airstrip communities.
Did you know? Some communities in central Idaho’s wilderness areas are so remote that fuel is delivered by small aircraft to airstrip communities rather than by tanker truck — making Idaho home to some of the most logistically complex fuel delivery operations in the continental United States. Idaho is one of the fastest growing states in the country, with the Boise metro area among the top ten fastest growing nationally, driven by migration from California, Washington, and Oregon — creating rapidly increasing fuel demand in the Treasure Valley. Idaho’s agricultural sector including the famous Idaho potato industry is a major diesel consumer, making fuel a critically important input for the state’s dominant industry.
Compare today’s average in Idaho with nearby states to understand regional price differences.
Learn more about what drives gas prices across the United States.
Crude oil prices are the biggest driver of what you pay at the pump. For U.S. and global crude oil production data updated from EIA figures, see Oil Production Live.