Costco in Illinois — 105 index records | Cobroker

Market › Costco › Illinois

Costco in Illinois

Costco has 105 index records in Illinois, its 6th-largest state of the 48 it operates in.

Where Costco has opened in Illinois

Cities with verified Costco openings in Illinois. The count beside each city is its verified openings — not its total Costcolocations.

Naperville2
Bloomingdale1
Bolingbrook1
Champaign1
Chicago1
Lake in the Hills1
Melrose Park1
Oak Brook1
Yorkville1

Costco in other states

California768
Washington248
Texas216
Florida156
Arizona114
Virginia100
Georgia83
Michigan83
New Jersey83

Costco nationwide — store count and growth →
Every chain opening in Illinois →
Every discount & value chain we track →
All states →

Where should Costco open next in Illinois?

Cobroker ranks the Illinois trade areas that look like the ones Costco already performs in — demographics, co-tenancy, traffic.

Run the free report →

Cobroker does the site-selection work end to end: give us the brand and the requirements, and we hand back the markets, the search areas and the specific parcels — with the research behind each one.

Site selection

Site Selection ProjectBrand DNA, top markets, ranked search areas and scored parcels, in one project.
Neighborhood monitorsA standing watch on the areas you picked, so new listings surface as they appear.
Client deliverablesA report, a presentation deck and a video brief, produced from the same project.

Free to use

MarketWhich US retail chains are opening stores fastest, by category and by state.
Find Your Next DealScreen the country for the areas where one brand should open next.
Property reportsHand it an address: which brands fit the site, and who owns it.

For teams

Property agentAn AI analyst inside the project that works your property data with you.

Enterprise modulesCustom tools built into your workspace for one portfolio's workflow.

Your projectsEverything you have run, in one workspace.

© 2026 CobrokerPrivacy