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Costco · Grafton, WI

Costco Grafton

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950 PORT WASHINGTON ROAD
Grafton, WI 53024
Address
950 Port Washington Road, Grafton, WI 53024
Phone
+1 262-204-1050
Opening hours
Monday – Friday10 AM–8:30 PM
Saturday9:30 AM–6 PM
Sunday10 AM–6 PM
Hours may differ on public holidays.
Website
costco.com/warehouse-locations/grafton-wi-628.html
Coordinates
43.324933, -87.921672

This listing is based on OpenStreetMap data (updated 2026-10-06). Something wrong? Fix it on OpenStreetMap or let us know.

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Frequently asked questions

Where is Costco Grafton?

Costco Grafton is located at 950 Port Washington Road, Grafton, WI 53024. Use “Get directions” to start a route from where you are.

What is the phone number of Costco Grafton?

The listed phone number is +1 262-204-1050.

What are the opening hours of Costco Grafton?

Recorded opening hours: Monday – Friday 10 AM–8:30 PM; Saturday 9:30 AM–6 PM; Sunday 10 AM–6 PM. Hours may differ on holidays.