List of all Costco Locations in Ontario, California, United States (August 2026)
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| Store ID | Store Name | Country | City | Region | ZIP Code | Address | Coordinates | Phone Number | Fax Number | Manager Name | Opening Hours | Opening Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1700
|
Ontario Home Showroom
|
91764
|
5640 East Airport Dr
|
+1 909 563 1985
|
—
|
Patrick Valero
|
|
2025-04-15
|
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|
678
|
Rancho Cucamonga
|
91764
|
11800 4th St
|
+1 909 581 1703
|
—
|
Dave Olson
|
|
1992-10-01
|
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|
947
|
Ontario Business Center
|
91761
|
3680 E Guasti Rd
|
+1 909 789 1221
|
—
|
—
|
|
2020-08-06
|
Download Costco Locations Dataset
Download the complete database of all 942 Costco locations in CSV/ZIP format.