When it comes to speed, scale, and reach, Amazon’s logistics network is unrivaled. In this 2025 update, we rank the biggest Amazon warehouses and identify the largest Amazon warehouse in the world—with a close look at major Amazon warehouse locations in the U.S. (including California), the UK, and Canada. From multi‑story robotics fulfillment centers to regional mega‑sites, these buildings power Amazon’s same‑day and one‑day delivery.
We’ll explore the biggest Amazon warehouses in the world, spotlight upcoming mega-sites, and break down the different types of Amazon facilities that make ultra-fast delivery possible.
| Amazon Warehouse Locations | Approximate Size (sq. ft.) | Notes |
|---|---|---|
| Ontario, California, USA | 4.5M | Largest operational Amazon warehouse in the world. Widely reported as Amazon’s largest warehouse globally; 5–6 stories. |
| Woodburn, Oregon, USA | 3.8M | Largest Amazon FC in the Pacific Northwest; five stories, ~105 ft. tall. |
| Johnston, Rhode Island, USA | 3.8M | New England mega‑site; ~1,500+ jobs; designed for high‑automation sortable items. |
| Wilmington, Delaware, USA | 3.8M | Massive East Coast hub with advanced automation. |
| Suffolk, Virginia, USA | 3.8M | Robotics FC; one of Virginia’s largest buildings. |
| Colorado Springs, Colorado, USA | 3.7M | Strategic Rocky Mountain logistics hub. |
| Mt. Juliet, Tennessee, USA | 3.6M | Multi-story fulfillment center with robotics integration. |
| Hyderabad, India (campus) | 3M | Amazon’s largest office campus is not a warehouse but is worth noting. |
| Calgary, Alberta, Canada | 2.8M | Among the largest in Canada; new robotics FC. |
| Ottawa, Ontario, Canada | 2.8M | Canada’s largest at opening (2021); multi-level robotics FC. |
| Tilbury, London, UK | 2M | Major European fulfillment center. One of the UK’s biggest and most automated FCs. |
| Dunfermline, Fife, Scotland | 1.5M | UK’s most significant Amazon returns and fulfillment site. |
| Moreno Valley, California, USA | 1.25M | Among California’s larger pre‑robotics era FCs. |
| Phoenix, Arizona, USA | 1.1M | Known for employee mobility tools like bikes and carts. Multiple large DC/FC leases across the Valley (Mesa, Glendale, Buckeye). |
| Amazon Warehouse Locations | Approximate Size (sq. ft.) | Notes |
|---|---|---|
| Loveland, Colorado, USA | 3.8M | Five‑story robotics FC; delayed from 2025. |
| Waterbury–Naugatuck, Connecticut, USA | 3.2M | Five‑story robotics FC advancing access road and site work. |
| Richmond region, Virginia, USA | 3.1M | Fourth VA robotics FC, 650k sq. ft. footprint on 100+ acres. |
| Ottawa, Ontario, Canada | 3.1M (upgrade to 7M) | Canada’s largest operational Amazon fulfillment site. |
| Town of Niagara (Buffalo area), New York, USA | 3M | Five‑story robotics FC near Niagara Falls Int’l Airport. |
Amazon’s fulfillment network isn’t just made of big buildings; it’s a mix of facility types, sizes, and technologies.
Southern California’s Inland Empire, home to Amazon’s Ontario and Moreno Valley sites, is the perfect place for ultra-fast delivery. It sits next to the Los Angeles and Long Beach Ports, giving Amazon direct access to imported goods. With millions of customers just a short drive away and one of North America’s largest industrial real-estate markets, this region has become Amazon’s powerhouse for next-day and same-day shipping. Recent reports show the area’s warehouses are filling up faster than anywhere else, as mega-tenants like Amazon keep expanding through 2025.
Amazon’s Wilmington, Delaware, fulfillment center spans five stories and totals about 3.8 million square feet—roughly the size of 66 football fields. The ground floor covers 640,000 square feet (around 14.7 acres), making it over seven times larger than California’s Hearst Castle. It’s one of the East Coast’s most advanced and spacious Amazon facilities.
At Amazon’s Dunfermline, Scotland site, space is measured in superlatives. The building can hold the equivalent of 110 Olympic swimming pools or 14 football pitches of products. Inside, employees work along four miles of conveyor belts, moving boxes between departments for processing, gift wrapping, and labeling—a glimpse into Amazon’s European logistics scale.
Photo credit: Amazon
Even at four million square feet, rack integrity makes or breaks uptime.
From Ontario, California’s ≈ 4.1M+ sq. ft. giant to new 3.8M sq. ft. hubs in Oregon and Rhode Island, Amazon is leaning toward tall, automated, regionalized nodes. As footprints grow, so does the importance of engineered rack safety, from anchors to inspections.
Next step: Get your free checklist or talk to a Damotech expert to baseline rack integrity before the next peak.
FAQ
Ontario, California, holds the current record at ≈ 4.06–4.5M sq. ft. total floor area (multi‑story). Precise figures vary by source; CoStar reported ≈ 4.06M, while later local coverage cited ≈ 4.5M and six stories.
Q2. What is the largest Amazon warehouse in California?Ontario (≈ 4.06–4.5M sq. ft.). Other large California sites include Moreno Valley (~ 1.25M sq. ft.) and multiple 1.1–1.2M sq. ft. facilities around the Phoenix–Inland Empire/Southwest region supporting CA deliveries.
Q3. Does Amazon have large warehouses outside the U.S.?Yes. Examples include Ottawa, Canada (≈ 2.8M sq. ft.), Calgary, Canada (≈ 2.8M sq. ft.), and Tilbury, UK (≈ 2.0–2.2M sq. ft.).