Costco North Dakota Gas Prices

Costco operates 2 fuel centers in North Dakota, spread across 2 cities. Across the state, regular gas averages $3.689, premium runs about $0.675 higher at $4.364, and diesel sits at $5.099. The lowest-priced regular pump is at Costco West Fargo in West Fargo at $3.429, while Bismarck in Bismarck sits about $0.520 higher. Across the state, regular pump prices have climbed about $0.025 over the past month, from $3.664 a month ago. Premium has eased about $0.085 and diesel has climbed about $0.250 over the same period. Diesel is sold at 1 of the 2 North Dakota locations.

If your vehicle takes premium, the lowest in North Dakota is Costco West Fargo in West Fargo at $4.029. The cheapest diesel is at Costco Bismarck in Bismarck at $5.099. Pump prices shift from one warehouse to the next with local taxes, fuel-blend rules, and transport costs, but Costco fuel is members-only and usually runs below nearby branded stations — which is what keeps these pumps busy.