Costco Louisiana Gas Prices

Costco operates 4 fuel centers in Louisiana, spread across 4 cities. Across the state, regular gas averages $3.587, premium runs about $0.805 higher at $4.391, and diesel sits at $5.639. The lowest-priced regular pump is at Costco Baton Rouge in Baton Rouge at $3.499, while Lafayette in Lafayette sits about $0.150 higher. Across the state, regular pump prices have eased about $0.120 over the past month, from $3.707 a month ago. Diesel has eased about $0.260 over the same period. Diesel is sold at 1 of the 4 Louisiana locations.

If your vehicle takes premium, the lowest in Louisiana is Costco Lafayette in Lafayette at $4.339. The cheapest diesel is at Costco Lafayette in Lafayette at $5.639. 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.