Cheapest Gas in Bismarck, ND

Updated May 21, 2026 — Prices updated regularly from EIA data

$2.74

Lowest price at Costco in Bismarck

Finding Cheap Gas in Bismarck

Paying less for gas in Bismarck does not require sacrifice. The cheapest stations here match or beat the quality of premium branded competitors. Know where to go and save $$0.25 per gallon starting today.

Maximum Savings in Bismarck

Choose Costco over Chevron

$0.25 per gallon

$3.75 per 15-gallon fill • $12.00 per year (est.)

Cheapest Brands in Bismarck

Rank	Brand	Est. Price	Savings vs. Most Expensive
#1	Costco	$2.74	$0.25
#2	Speedway	$2.86	$0.13
#3	Circle K	$2.87	$0.12
#4	Sunoco	$2.90	$0.09
#5	Marathon	$2.91	$0.08
#6	BP	$2.93	$0.06
#7	Mobil	$2.94	$0.05
#8	Exxon	$2.95	$0.04
#9	Shell	$2.97	$0.02
#10	Chevron	$2.99	$0.00

Gas Saving Tips for Bismarck Drivers

Sign up for gas station loyalty apps — Shell Fuel Rewards, Marathon MakeItCount, and Circle K Inner Circle all offer genuine per-gallon discounts that compound over time.
Use a gas rewards credit card. The Costco Citi Visa earns 4% back on eligible gas; Blue Cash Preferred earns 3% at US gas stations. Pairing a reward card with a warehouse club maximizes savings.
Avoid filling up at highway exits, airports, and tourist areas where convenience premiums routinely add 15-25 cents per gallon.
Keep your tires properly inflated to the manufacturer's recommended PSI — under-inflated tires reduce fuel economy by up to 3%, costing you money every mile.
Accelerate and brake gradually. Aggressive driving can reduce fuel economy by 15-40%, directly increasing how often you fill up.