The Top US Companies by Total Warehouse Square Footage

Amazon's US warehouse footprint, at ~445 million square feet, is larger than Walmart, Home Depot, GXO, and U-Haul combined. The company added ~35 million square feet of new leased space in 2024 alone, opening a new facility roughly every three days.

Together, the top US warehouse operators on this list control ~1.24 billion square feet of space (close to twice the land area of Manhattan).

By the numbers

• Amazon (~445M sq ft) exceeds the next four companies combined: Walmart, Home Depot, GXO, and U-Haul together come to ~427M.
• Four retailers occupy four of the top six slots: Amazon, Walmart, Home Depot, and Target hold ~771M sq ft between them, roughly 62% of the entire list.
• Four pure-play logistics companies (GXO, NFI, GEODIS, DHL) operate ~258M sq ft under their clients' brands. You see their warehouses as Apple, Nike, or Boeing facilities.
• Specialised storage giants quietly fill the middle of the list: U-Haul (self-storage), Iron Mountain (vault & archive), and Lineage (cold storage) together hold ~212M sq ft.
• Home Depot's distribution network is the third-largest in the US, bigger than FedEx, UPS, Target, and Costco combined.

Beyond the square footage

• Walmart's supply chain runs at staggering scale. More than 200 trucks are unloaded at a single Walmart distribution center every day. The fleet operates ~9,000 tractors, ~80,000 trailers, and ~11,000 drivers.
• Iron Mountain started as a nuclear bunker company in 1951. Bill Gates' photographs are stored 220 feet underground in a limestone mine. Universal Music's US masters sit in the same cave.
• U-Haul has more storage locations than Walmart has stores and added 6.5 million sq ft of new self-storage capacity in fiscal 2025 alone. The US self-storage industry is now worth ~$39 billion a year, more than Hollywood's domestic box office.
• Lineage runs the world's largest cold-storage network. Its US freezer capacity could store every frozen pizza Americans eat in a year, fifteen times over.
• GEODIS is owned by SNCF, France's national railway, one of the few major US warehouse operators whose parent company also runs bullet trains.

What's more, most of these companies don't own most of these buildings. Home Depot is roughly 97% leased, and the major 3PLs operate almost entirely on lease. The rankings therefore move with the industrial real-estate market as much as with corporate strategy: when a 3PL loses a major customer contract, square footage can roll off the balance sheet within a quarter. Amazon's data-centre footprint (AWS, ~49M sq ft) is deliberately excluded. It serves a different use case and is a different real-estate class. The underlying site-level records are drawn from Veridion's Location Intelligence data, which catalogues and continuously refreshes structured profiles of physical business sites worldwide.