What’s Opening

Costco

Southborough, Massachusetts
Approved
Retail
Expected Opening
Summer 2027
Approximate — no exact date announced
Address
21 Coslin Drive
Southborough, MA
First Reported
Apr 2026
4 months of coverage
Reported by
1
1 publisher, 2 articles · updated August 22, 2026
Latest development
Expected opening Summer 2027
Tue, April 14, 2026

Timeline

April 14, 2026
Expected opening Summer 2027
MetroWest Daily News
April 14, 2026
First reported as approved
MetroWest Daily News

Sources

April 14, 2026
February 26, 2026

Other Costco Locations

All Costco openings
Opening Soon
Costco
Retail · Stone Mountain, GA
Expected Thu, August 27, 2026
Opening Soon
Costco
Retail · Amherst, NY
Expected October 2026
Proposed
Costco
Retail · Clarksville, TN
Expected Spring 2028
Proposed
Costco
Retail · West Seneca, NY
Expected Not announced

Also in Southborough

All Southborough openings
Opening Soon
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Restaurant
Expected Not announced