Ontario shoppers, get ready—a brand-new Costco warehouse is about to make waves in Newmarket, and it’s shaping up to be one of the most impressive in the province. With its grand opening scheduled for Wednesday, August 20, this massive new location is not only about size but also about an expanded range of features and convenience.
Table of Contents
Location and Accessibility
Perfectly Positioned for Northern GTA Shoppers
The Newmarket Costco is strategically located at 107 Harry Walker Parkway S., just off Highway 404 and Davis Drive. This central position makes it highly accessible for residents of nearby communities including Aurora, Bradford, and parts of northern Toronto.
This is Ontario’s 43rd Costco warehouse, and it arrives at a time when demand for bulk shopping and wholesale pricing continues to grow across the province.
A Second Option for Area Shoppers
Joining East Gwillimbury, but Bigger and Better
Newmarket’s Costco will become the second location in the area, adding a much-needed option to complement the nearby East Gwillimbury warehouse. Until now, residents had to travel to Richmond Hill, Markham, or Vaughan for alternative Costco experiences. That’s about to change in a big way.
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What’s Inside? A Closer Look at Features and Amenities
A Warehouse That Has It All
Spanning approximately 15,500 square metres, this location isn’t just one of the largest—it’s one of the most feature-rich.
Food & Beverage Highlights:
- Sushi bar serving fresh, ready-to-eat rolls
- Expanded alcohol section with beer, wine, champagne, and RTDs
- Full-service bakery
- Fresh produce section
- Rotisserie chicken counter
- Service deli and fresh meat department
This is only the second Costco in Ontario to include a sushi bar—the first being in Brantford, which introduced the feature in 2024.
Convenience & Services:
- 24 gas pumps
- 1,000+ parking spaces
- Self-checkout lanes to ease long wait times
- Hearing aid department
Whether you’re fueling up, shopping for fresh groceries, or picking up a quick meal, this location is designed for efficiency and variety.
Grand Opening Details
What to Expect on Opening Day
The official ribbon-cutting ceremony will take place at 6:30 a.m. with Newmarket Mayor John Taylor in attendance. Doors will open to members shortly after, at 7:00 a.m. sharp.
Regular Store Hours:
- Monday to Friday: 9:00 a.m. – 8:30 p.m.
- Saturday & Sunday: 9:00 a.m. – 6:00 p.m.
If you’re planning to visit on opening day, arrive early—crowds are expected.
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Community Impact
Creating Jobs and Boosting Local Access
In addition to bringing a new shopping experience to the area, the Newmarket Costco has created approximately 80 permanent jobs, contributing positively to the local economy.
Costco’s Growing Footprint in Ontario
With the addition of Newmarket, here’s a snapshot of Costco’s presence in the province. Locations span from Ajax and Barrhaven to Windsor and Sudbury, with major hubs in Toronto, Mississauga, Ottawa, and beyond.
Some of the Ontario Locations Include:
- Brantford
- East Gwillimbury
- Vaughan
- Scarborough
- Etobicoke
- Kitchener
- Markham
- Stoney Creek
- Waterloo
- Niagara Falls
- Peterborough
… and dozens more.
Planning Your Visit
Address: 107 Harry Walker Parkway S., Newmarket, ON
Opening Day: Wednesday, August 20 at 7:00 a.m.
Whether you’re drawn by the gas prices, the sushi bar, or the unbeatable bulk deals, the Newmarket Costco promises to be a major retail destination for the northern GTA.
Will you be heading out on opening day? If so, set your alarm—this one’s going to be big.