With a Gold Star Membership, you can stock up while keeping costs low. Costco Gas Stations offer some of the lowest fuel prices around, making sure you save money every time you fill up.

Washington’s average cost of gas per gallon is now $3.96 — a 6-cent ... The cheapest gas price in Whatcom County on Tuesday, Feb. 4 was $3.45 at Costco, 4125 Arctic Ave. in Bellingham ...