State avg
$4.22
▼ $0.14 this week
Cheapest city
Billings
$3.98 avg
Most expensive
Whitefish
$4.61 avg
vs national avg
+$0.12
Above average
30-day price trend — regular
Montana avg
Montana state gas tax: 33¢/gal · Federal tax: 18.4¢/gal · Total tax: ~51¢/gal
Montana's high prices reflect its remote location — the state has only one refinery (in Billings) supplying a vast geographic area. Most of the state relies on fuel trucked from Wyoming or Idaho. Northern Montana near the Canadian border sees the highest prices due to transport distance.
Sources: AAA State Gas Price Averages · EIA Gasoline & Diesel Update
Nearby states
Wyoming$4.211
Idaho$4.404
North Dakota$3.844
South Dakota$3.962
All states →map