Costco Gas Prices in Grafton

Latest reported Costco fuel prices in Grafton, Wisconsin.

Stations: 1
Avg. Regular: $4.179
Lowest Regular: $4.179
Avg. Diesel: N/A

Costco Gas Stations (1)

Costco Grafton

950 Port Washington Rd, Grafton, Wisconsin 53024-9201

Regular

$4.179

Premium

$5.199

Diesel

N/A

Updated Oct 26, 2026View details →