Head offices
| Photo | Company | Address | Headquarters size |
|---|---|---|---|
 | Cboe Global MarketsGlobal headquarters | 433 West Van Buren Street, Chicago, IL 60607 | 185,000 sq ft (17,187 m²) |
 | McDonald'sMcDonald's Global Headquarters (MHQ) | 110 N. Carpenter St., Chicago, IL 60607 | 490,000 sq ft (45,523 m²) |
 | Molson CoorsAmericas segment operational headquarters | Chicago, Illinois | 73,363 sq ft (6,816 m²) |
 | Mondelēz InternationalGlobal Headquarters | 905 West Fulton Market, Suite 200, Chicago, IL 60607 | ≈ 80,000 sq ft (7,432 m²) |
 | United AirlinesWillis Tower (headquarters and operations center) | 233 South Wacker Drive, Chicago, IL 60606 | 740,000 sq ft (68,748 m²) |
Sizes are the companies’ own figures, as shown on each profile with the source. “—” means the company does not publish one.
Other notable offices in Chicago
Offices of companies headquartered elsewhere, from each company profile.
| Company | Office | Address |
|---|---|---|
| GoogleHeadquarters: Mountain View, California | James R. Thompson Center | James R. Thompson Center, ChicagoSource: Wikipedia, “James R. Thompson Center” (acquired 2022, renovation from 2024) |
| SalesforceHeadquarters: San Francisco, California | Salesforce Tower ChicagoOpened 2023 | Wolf Point, ChicagoSource: Wikipedia, “Salesforce Tower Chicago” (regional headquarters) |
Chicago in headquarters history
- 2022Boeing · Long Bridge becomes the global headquarters
On May 5, 2022 Boeing named its Arlington campus its global headquarters, citing nearness to customers and stakeholders and access to engineering talent, and kept a smaller office in Chicago. A Veterans Wall honoring employees' military service was added in 2025.
- 2021Squarespace · Listed on the NYSE, offices in four cities
Squarespace listed on the New York Stock Exchange in May 2021. Besides the headquarters it had offices in Dublin (≈ 25,000 sq ft), Portland (≈ 26,000 sq ft) and Los Angeles, and added Chicago with Tock.
- 2021Cboe Global Markets · The Old Post Office
Cboe opened its new global headquarters in Chicago's historic Old Post Office at 433 W. Van Buren Street.
- 2020Mondelēz International · 905 West Fulton Market, Chicago
The global headquarters moves back into the city, to the Fulton Market District. Mondelēz's SEC filings list 905 West Fulton Market from April 2020; the Form 10-K filed in February 2020 still gave Deerfield.
- 2018McDonald's · Back to Chicago: 110 North Carpenter Street
On June 4, 2018 McDonald's opened its new nine-story headquarters at Randolph and Carpenter Streets in the West Loop, on the site of the former Harpo Studios. About 2,000 people moved in, along with the flagship Hamburger University.
- 2012United Airlines · 233 South Wacker Drive — Willis Tower
By its 2012 annual report, United's world headquarters was at 233 South Wacker Drive — Willis Tower. United leased about 1,100,000 sq ft (≈ 102,193 m²) for its headquarters and operations center in downtown Chicago.
- 2001Boeing · 100 North Riverside, Chicago
Boeing moved its world headquarters to the top 12 floors of 100 North Riverside on the Chicago River, saying the headquarters should be central to its businesses but separate from its operations. About 200 people started on September 4, 2001, after a 117-day fit-out; about 400 were expected by year-end.
- 1993Starbucks · Into the old Sears building in SoDo
Starbucks began moving its offices into the former Sears, Roebuck & Co. catalog building on Utah Avenue South — built in 1912 and, after a 1914 addition, the largest structure west of Chicago.
- 1973Cboe Global Markets · A converted smoking lounge
On April 26, 1973, Cboe opened as the world's first exchange for listed options, with a handful of screens in a converted smoking lounge in the Chicago Board of Trade Building.
- 1972Mondelēz International · To the suburbs: Glenview, Illinois
Kraftco Corporation moves its headquarters from New York City to Glenview, a northern Chicago suburb; the remaining Peshtigo Court staff follow in the early 1980s.
- 1955–1971McDonald's · Headquartered in Chicago
McDonald's says the company was headquartered in Chicago from 1955 to 1971.
- 1938Mondelēz International · 500 Peshtigo Court, Chicago
Kraft-Phenix Cheese Corp., by then owned by New York-based National Dairy Products, moves its headquarters to 500 Peshtigo Court. Kraft left the building in December 1980.
Questions
Which big companies have their headquarters in Chicago?
On eciffo, 5 of the biggest companies have their head office in Chicago: Cboe Global Markets, McDonald's, Molson Coors, Mondelēz International and United Airlines.
Which big companies have notable offices in Chicago besides their headquarters?
Google (James R. Thompson Center, James R. Thompson Center, Chicago); Salesforce (Salesforce Tower Chicago, Wolf Point, Chicago).
What is the biggest company headquarters in Chicago?
Of the head offices on eciffo, United Airlines's Willis Tower (headquarters and operations center) is the largest at 740,000 sq ft (68,748 m²), as reported by the company.