Microsoft Offices Around the World: Redmond HQ and Regional Sites

Microsoft’s head office is at One Microsoft Way, Redmond, Washington 98052-6399. The main phone number is (425) 882-8080. That is the address on the cover of every Microsoft annual report. But Redmond is only the hub. Microsoft also runs regional head offices in Singapore, Toronto, Munich, Reading and Gurugram, among many others.

You know what the real question is, though. Most people want the right Microsoft address for a letter, a sales call, an interview or a visit. So we compiled this guide from Microsoft’s latest Form 10-K, its worldwide contact page, its campus fact sheet and the UK company register. Then we ran our own math on the space Microsoft owns and leases.

One Microsoft Way: The Redmond Address Behind Every Filing

Microsoft has called Redmond home since February 26, 1986. Before that, it moved from Albuquerque, New Mexico, to Bellevue, Washington, on January 1, 1979. So the company has now spent four decades on the same patch of land east of Seattle.

The 10-K for the year that ended June 30, 2026, gives the current size. Microsoft uses about 14 million square feet in King County, Washington. It owns about 12 million of those square feet, on roughly 520 acres. The other 2 million square feet are leased. Teams there work in engineering, sales, marketing, operations and general administration.

In fact, Redmond is smaller than many people think when set against the whole company. By our math, King County holds about 12.5% of Microsoft’s 112 million square feet. The other 87.5% sits in offices, labs and datacenters across the US and the rest of the world.

112 Million Square Feet, Split Between Owned and Leased

Microsoft’s 10-K gives one table for all its property. It does not split offices from datacenters. Even so, the table shows where the space sits and who holds the deed. We built the next table from it and added the shares ourselves.

Two patterns show up. First, Microsoft owns most of its US space but leases most of its space abroad. Second, the US holds 58% of the total, while 42% sits outside the country. That split is close to the staff split. About 54% of Microsoft’s 223,000 people work in the US.

We also divided space by people. That gives about 500 square feet per employee worldwide. However, this is not desk space, because the figure includes datacenters and labs. Microsoft says its largest owned sites abroad are in China, India, Ireland, the Netherlands and Sweden. Its largest leased sites abroad include Australia, Canada, France, Germany, Japan and the UK.

For the money side of that building program, see our breakdown of Microsoft’s earnings and Azure capital spending.

The Redmond Rebuild: 17 New Buildings on the East Campus

Microsoft has been rebuilding the east side of its Redmond campus. Its fact sheet sets out the plan. It calls for 17 new buildings with 2.5 million square feet of new office space. Over time, 13 older buildings will come down.

Microsoft is also renovating older buildings across Redmond. That brings renovated space to 6.7 million square feet. So new and renovated space adds up to 9.2 million square feet. Microsoft said the project would take five to seven years and create about 2,500 construction jobs.

Lake Bill, the Plaza and the Bridge Over SR 520

The new campus is car-free on the inside. The plan puts parking in an underground garage. It also adds a 2-acre plaza that can hold up to 12,000 people for events. Besides that, there are trails, sports fields, shops and places to eat.

A bridge for walkers and cyclists crosses State Route 520. It links the east and west halves of the campus. Microsoft put $33.3 million into a deal with Sound Transit for the Redmond Technology Center light rail station and that bridge. One old landmark stays, too. The pond outside Building 4, nicknamed “Lake Bill,” was kept in the plan.

Visiting Building 92 in Redmond

Most Redmond buildings are closed to the public. The exception is the Microsoft Visitor Center in Building 92, at 15010 NE 36th Street, Redmond, WA 98052. It has hands-on exhibits on AI and research, and a display on the first personal computer. Visitor parking is on the east side of the building.

Still, call (425) 703-6214 a day before you go. The center sometimes closes for private events. Also, the team there cannot answer school project questions. Students get a separate set of fast facts instead.

Regional Head Offices in Singapore, Toronto and 14 Other Cities

Microsoft keeps one worldwide contact page with local addresses. We went through it region by region. In our count, it lists offices in more than 90 countries and territories. Microsoft also labels some offices, such as Dubai, Nairobi and Johannesburg, as regional offices for nearby markets.

We picked 16 head and regional offices for the next table. Each address is copied from Microsoft’s own contact page.

A few details surprised us in our research. For example, the Belgian office sits inside Brussels Airport, in the Passport Building at Zaventem. The Swiss office is at The Circle, right by Zurich Airport. In Israel, Microsoft’s office is at 2 HaPnina Street in Ra’anana.

Leopardstown and Thames Valley Park: Microsoft in Ireland and Britain

Ireland is one of the five countries where Microsoft owns its largest sites abroad. Its main Irish building is One Microsoft Place in Leopardstown, south Dublin. The €134 million campus opened in March 2018. It covers 34,000 square meters over four floors. By our conversion, that is about 366,000 square feet.

At the opening, the building held about 2,000 staff from 71 nationalities. It also has DreamSpace, a learning hub for students and teachers. Microsoft put over €5 million into it. A second building, One Microsoft Court, sits in the same business park. Microsoft also lists an office in Belfast, at the Northern Ireland Science Park.

Across the Irish Sea, Microsoft Limited is the main UK company. Companies House shows its registered office at Microsoft Campus, Thames Valley Park, Reading, Berkshire, RG6 1WG. The company was set up on March 24, 1982, and its number is 01624297. So legal letters for Microsoft in the UK go to Reading.

Hyderabad, Bengaluru and Gurugram on Microsoft’s India Map

India plays three roles for Microsoft. First, Gurugram holds the India regional office, in DLF Cyber City. Corporate and sales mail goes there. Second, Hyderabad holds the Microsoft India Development Center, which builds products. It opened in 1998 with about 20 people. Microsoft calls it one of its largest development centers outside the US.

Third, Bengaluru is the home of Microsoft Research India. In fact, India is one of the five countries where Microsoft owns its largest sites abroad. It is also on the list of its largest leased sites. Teams setting up near Microsoft’s Bengaluru lab can compare desk options in our guide to coworking spaces in Bangalore.

Where Microsoft Research Runs Its Nine Labs

Microsoft Research names nine labs. Seven have a clear home city. The other two, AI for Science and Catalyst, work across sites. We put the seven city labs in one table, along with two smaller research groups that sit in Nairobi and Zurich.

So three of the seven city labs are in the US. The rest sit in Canada, the UK, China and India. Microsoft’s R&D staff is much wider than these labs, though. The 10-K counts about 77,000 people in product research and development. That is about 35% of all staff.

Other tech giants spread their teams in a similar way. Our guides to Amazon office buildings worldwide and Google office addresses around the world map their sites. For the chip side of AI, see our guide to Nvidia offices worldwide.

Which Microsoft Address to Use for Mail, Sales or a Visit

We sorted the addresses by the reason people usually contact Microsoft. Pick the one that matches your need.

1. US legal or investor mail goes to One Microsoft Way, Redmond, WA 98052-6399. The switchboard is (425) 882-8080.
2. UK legal letters go to the registered office of Microsoft Limited at Thames Valley Park, Reading, RG6 1WG.
3. Sales questions outside the US go to the local office on Microsoft’s worldwide contact page. Each country has its own phone line.
4. A public visit works at the Visitor Center in Building 92, Redmond. Call ahead first.
5. Job interviews take place in a named building. Ask the recruiter for the building number, because the Puget Sound campus counted 125 buildings when the rebuild began.

Teams that work with Redmond, Dublin and Hyderabad at once lose hours to scheduling. Our time zone converter shows the local hour in each city. Also, treat any “Microsoft recruiter” who asks you for money as a scam. Our phishing email examples show the usual tricks.

Redmond, Visits and Office Counts: What Microsoft Searchers Ask

Where Is Microsoft’s Headquarters Located?

Microsoft’s headquarters is at One Microsoft Way, Redmond, Washington 98052-6399. The campus sits east of Seattle, on about 520 acres of land that Microsoft owns.

How Many Buildings Does Microsoft Have in Redmond?

Microsoft’s campus fact sheet counts 125 buildings in the Puget Sound region, on a 502-acre Redmond campus. That count comes from the start of the rebuild. The plan adds 17 new buildings and removes 13 older ones over time.

Can You Visit the Microsoft Campus?

Yes, but only the Visitor Center in Building 92 at 15010 NE 36th Street. Call (425) 703-6214 a day ahead, because it can close for private events.

How Many Countries Does Microsoft Have Offices In?

We counted local offices in more than 90 countries and territories on Microsoft’s worldwide contact page. In total, Microsoft uses 47 million square feet outside the US.

Where Is Microsoft’s Asia Pacific Headquarters?

Microsoft’s Asia Pacific head office is at 1 Marina Boulevard, #22-01, Singapore 018989. Its phone number is 65-6882-8899.

Microsoft Filings, Registers and Pages We Used

• Microsoft: Form 10-K for the fiscal year ended June 30, 2026
• Microsoft: Worldwide contact page with local office addresses
• Microsoft: Redmond campus fact sheet (PDF)
• Microsoft News Center: New Redmond campus plan unveiled
• City of Redmond: Microsoft Redmond campus refresh
• Microsoft: Visitor Center in Redmond
• Microsoft Research: Labs and locations
• Microsoft India: New leader for the India Development Center
• Companies House: Microsoft Limited (01624297)
• Engineers Ireland: Microsoft’s €134m Dublin campus with 2,000 staff
• Irish Tech News: Opening of One Microsoft Place in Dublin