For the first time in American history, a private company has overtaken the United States Postal Service as the nation's largest parcel carrier—and it's not particularly close anymore.
Amazon delivered 6.7 billion packages in 2025, edging past USPS's 6.6 billion and firmly establishing itself as the dominant force in American logistics, according to data from shipping analytics firm ShipMatrix. The milestone marks a stunning reversal for an agency that once held an unchallenged monopoly on American mail delivery.
The numbers tell a story of diverging trajectories. While Amazon's parcel volume surged 9.8% year-over-year, USPS saw its volumes contract by 8.3%. Traditional carriers UPS and FedEx are also retreating, down 8.3% and up just 5.9% respectively, as they pivot away from low-margin residential deliveries.
Amazon's rise didn't happen overnight. The company spent the last decade quietly building one of the world's largest logistics networks—hundreds of fulfillment centers, tens of thousands of delivery vans, a growing air cargo fleet, and a sprawling network of contracted drivers. What started as a way to reduce dependence on UPS and FedEx has evolved into a competitive advantage that's reshaping the entire industry.
The shift has profound implications for market concentration. Amazon now controls 28% of the U.S. parcel market, while also serving as a major customer for the carriers it's displacing. That dual role as competitor and client gives Amazon extraordinary leverage over pricing and service terms across the industry.
For USPS, the numbers are increasingly grim. Despite handling 6.6 billion parcels, the agency generated just $32.5 billion in revenue—substantially less than UPS's $58.3 billion and FedEx's $57.1 billion. The math reveals the core problem: USPS is stuck with the least profitable segments of the market while watching higher-margin business migrate to private competitors.
Meanwhile, UPS and FedEx are making a calculated retreat. Both companies are explicitly de-prioritizing commodity residential delivery in favor of premium business-to-business logistics and international shipping. The message is clear: competing with Amazon on last-mile delivery economics is a losing proposition.
