| Costco BELLEVUE (GREEN BAY) | Bellevue(920) 469-5700 | (920) 469-5700 |
| Costco Grafton | Grafton(262) 204-1050 | (262) 204-1050 |
| Costco Grand Chute | Grand Chute(920) 363-7000 | (920) 363-7000 |
| Costco Menomonee Falls | Menomonee Falls(262) 946-6060 | (262) 946-6060 |
| Costco Middleton | Middleton(608) 824-3950 | (608) 824-3950 |
| Costco New Berlin | New Berlin(262) 599-7030 | (262) 599-7030 |
| Costco Pewaukee | Pewaukee(262) 956-6700 | (262) 956-6700 |
| Costco Pleasant Prairie | Pleasant Prairie(262) 597-1027 | (262) 597-1027 |
| Costco SUN PRAIRIE | Sun Prairie(608) 825-4001 | (608) 825-4001 |
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