Wisconsin has 12 Costco warehouses, including 2 with diesel fuel and 12 with gasoline. Use our interactive map to search by ZIP code or city, or browse the diesel station list below.
→ Search for Costco stations near you in Wisconsin
Costco gas stations in Wisconsin consistently offer some of the lowest fuel prices in the state, typically undercutting competitors by 10 to 30 cents per gallon. Whether you're fueling up in Milwaukee, Madison, or Green Bay, the savings at a Costco pump are significant — especially for households with multiple vehicles or long commutes. Because gas prices change daily, we don't list exact rates on this page. Use the interactive map to find your nearest Costco gas station and verify current pricing when you arrive.
Wisconsin has 2 Costco locations with diesel fuel — Grand Chute (near Appleton) and Menomonee Falls (near Milwaukee). These two stations serve diesel drivers in the Fox Valley and southeastern Wisconsin. While coverage is limited, Costco continues to expand its diesel network across the Midwest. Drivers in the Madison or Green Bay areas may need to travel to reach the nearest diesel-equipped Costco.
Costco's diesel is ultra-low sulfur diesel (ULSD) with detergent additives. Learn more about Costco diesel quality or see how it stacks up in our Costco vs. Shell diesel comparison. For diesel engine longevity, consider using quality fuel additives.
Costco fuel stations in Wisconsin generally operate from 6:00 AM to 10:00 PM on weekdays, with reduced weekend hours. A Costco membership is required to purchase fuel. Executive members earn 2% cashback on gas purchases (subject to an annual maximum), making the membership especially valuable for frequent drivers. Visit our FAQ page for more details on hours, payment options, and membership benefits.
Every Costco warehouse in Wisconsin that offers diesel fuel:
| Warehouse | Address | Phone | Diesel Hours |
|---|---|---|---|
| Costco Warehouse - Grand Chute | 5401 W. Integrity Way, Grand Chute, WI | (920) 815-4500 | See station details |
| Costco Warehouse - Menomonee Falls | W162N9235 Pershing Ave, Menomonee Falls, WI | (262) 946-6060 | See station details |
Costco fuel stations consistently offer some of the lowest diesel prices in Wisconsin. Costco members can save significantly on diesel for trucks, RVs, and commercial vehicles. Diesel at Costco is typically high-quality, additized ultra-low sulfur diesel (ULSD).