Block (Square) Headquarters & Office Locations: Full 2026 Directory

Block, Inc. — the company still widely known as Square — is headquartered at 1455 Market Street, San Francisco, CA 94103. The Mid-Market address has been the company's home since its early growth years, and remains the global nerve center for a fintech platform that now spans payments, Cash App, Afterpay, and a Bitcoin division. Below is the complete 2026 directory of Block's confirmed office locations worldwide, plus context on why this matters if you're selling into the fintech space.

Where is Block (Square) headquartered?

Block, Inc. is headquartered in San Francisco, California. The official address is 1455 Market Street, Suite 600, San Francisco, CA 94103. The building sits in the Mid-Market corridor — a stretch of Market Street between Civic Center and SoMa that became a hub for tech companies in the early 2010s when the city offered tax incentives to relocate there. Twitter (now X) moved to the same block in 2012; Block followed and has stayed.

The headquarters houses executive leadership, core product teams, and the majority of Block's U.S.-based corporate functions. Jack Dorsey, co-founder and CEO, operates from this location. For official corporate correspondence, regulatory filings, and investor relations, 1455 Market Street is the address of record.

The building itself is a converted art-deco warehouse — roughly 400,000 square feet — that Block has occupied and expanded across multiple floors as headcount grew from a few hundred employees to over 13,000 globally at its peak, before the tech-sector contractions of 2022–2023.

Why did Square rebrand to Block Inc?

Square officially became Block, Inc. on December 10, 2021. The rationale was straightforward: the Square name had become synonymous with the hardware card reader and small-business payments product, but the company had grown into a much larger platform. A single product name was constraining how investors, partners, and potential employees perceived the business.

The rebrand created a cleaner corporate structure. Under Block Inc, the business units now operate semi-independently:

• Square — merchant services, point-of-sale hardware, and business banking
• Cash App — consumer peer-to-peer payments and financial services
• Afterpay — buy-now-pay-later, acquired for $29 billion in January 2022
• TIDAL — music streaming platform (partial ownership)
• TBD — Bitcoin and decentralized finance infrastructure

The name Block was chosen partly as a nod to blockchain technology and partly because it evokes the idea of building blocks — a deliberate reference to Jack Dorsey's long-standing Bitcoin advocacy. Each business unit retains its own brand, while Block serves as the holding company listed on the NYSE under the ticker SQ (the ticker was not changed during the rebrand).

"We built the Square name to be synonymous with empowering the seller. Block gives us the room to build, invest, and partner in ways that a single product brand simply can't."

— Jack Dorsey, CEO, Block Inc., December 2021 rebrand announcement

What are all of Block Inc's office locations in 2026?

Block's office footprint spans four continents. The list below reflects confirmed locations based on Block's corporate disclosures, LinkedIn workplace data, and public job postings as of mid-2026. Note that Block, like many post-2022 tech companies, reduced its physical footprint after workforce restructuring — some satellite offices listed in earlier directories have been consolidated or closed.

United States offices

International offices

Atlanta deserves particular mention: it functions as the de facto second headquarters for Cash App, with the majority of Cash App's product and operations leadership based there rather than San Francisco. This split between the Square business (SF-heavy) and the Cash App business (Atlanta-heavy) is significant for anyone mapping Block's organizational structure for competitive or partnership purposes.

How large is Block Inc as a company?

Block is a publicly traded fintech company listed on the NYSE under ticker SQ. At its 2021 peak, the company employed approximately 13,000 people globally. Following significant layoffs in 2023 — Block cut roughly 10% of its workforce in two separate rounds — current headcount is estimated at between 9,000 and 11,000 full-time employees across all business units.

In terms of revenue, Block reported $21.9 billion in total net revenue for full-year 2023, though a large portion of that figure is Bitcoin revenue (gross profit is a more meaningful metric at roughly $7.5 billion). Cash App generated the majority of gross profit, followed by the Square merchant ecosystem.

The company's scale matters for competitive positioning: Square serves more than 4 million active seller locations in the United States alone, making it one of the largest merchant services platforms in the market alongside Stripe, PayPal, Toast, and Clover.

Who are Block's main competitors?

Block competes across several distinct segments because of its multi-product structure. The competitive landscape looks different depending on which Block product you're mapping against:

Square merchant services competitors

• Stripe — developer-first payments, increasingly competing on POS hardware
• Toast — restaurant-specific POS with deep vertical integration
• Clover (Fiserv) — SMB POS hardware and payment processing
• PayPal / Zettle — card readers and online checkout for small merchants
• Lightspeed — retail and hospitality POS, competing directly on hardware

Cash App competitors

• Venmo (PayPal) — peer-to-peer payments, the most direct overlap
• Zelle — bank-integrated P2P transfers
• Chime — challenger bank targeting the same underbanked demographic
• Dave, MoneyLion — earned-wage access and financial wellness

Afterpay competitors

• Klarna — BNPL, the dominant European player now competing aggressively in the US
• Affirm — installment lending, publicly traded and merchant-integrated
• Sezzle, Zip — smaller BNPL players in overlapping markets

If you sell into any of these segments — payments infrastructure, merchant software, BNPL, or consumer fintech — companies actively using Block's products are qualified prospects by definition. They have budget, they've validated the problem category, and they're making active vendor decisions. Tools like Stealery let you search a competitor name — say, Square or Cash App — and surface every company using that product, filtered by size, location, and hiring signals. It's the fastest way to build a target list without manual research.

How do I contact Block Inc corporate?

Block's corporate contact channels vary by purpose. Here's a breakdown of the right contact point for each use case:

Investor relations

Block's investor relations team handles analyst inquiries, shareholder correspondence, and SEC filings. Contact via ir@block.xyz or through the Block investor relations portal.

Press and media

Media inquiries go to press@block.xyz. Block's comms team is based primarily in San Francisco and handles all business units under the Block corporate umbrella.

Business partnerships and enterprise sales

For partnership discussions related to Square for Retail, Square for Restaurants, or API integrations, the entry point is squareup.com/contact-sales or direct outreach to Block's BD team via LinkedIn — most are based in San Francisco, New York, and Atlanta.

Legal and compliance

For legal correspondence, the registered agent address is the San Francisco headquarters: Block, Inc., 1455 Market Street, Suite 600, San Francisco, CA 94103.

Why does Block's HQ location matter for B2B sales teams?

If you're a B2B seller — whether you're selling software to merchants, competing with Block's products, or targeting fintechs in your ICP — understanding Block's office structure tells you where decision-makers sit and which regional teams have procurement authority.

The key insight: Block's commercial functions are not centralized in San Francisco the way a traditional enterprise company might be. Cash App's buying decisions are made in Atlanta. Afterpay's vendor relationships are managed out of Melbourne and London. A sales rep targeting Block's operations who cold-calls the SF switchboard and assumes that's where all the action happens will miss the actual decision-making centers.

More broadly, Block's size and market position mean it shows up as a reference point in almost every competitive deal in the SMB payments and BNPL space. Knowing which companies in your territory are running Square POS, Cash App Business, or Afterpay integrations is the starting point for any displacement conversation — you know they have budget, they've chosen a vendor in your category, and they can articulate why they made that choice.