Does Amazon Ship USPS
Yes, Amazon ships USPS for certain delivery types, including Amazon Ground Hybrid and some Amazon Logistics deliveries, using the United States Postal Service network for last-mile and regional distribution. USPS is a core carrier for Amazon, especially for residential deliveries in dense areas and for Amazon Locker and Amazon Hub Counter pickups. Amazon uses USPS to extend its reach into rural and underserved zones where its own fleet is less cost-effective. For specific service details, see Amazon's shipping overview page here.
Amazon's USPS integration is part of a broader multi-carrier strategy that also includes UPS, FedEx, and Amazon Logistics. The USPS partnership helps Amazon offer lower shipping costs and faster delivery windows for Prime members in many ZIP codes. Amazon's use of USPS peaked in volume terms during the pandemic surge but has since shifted toward a more balanced mix with its own network. The USPS remains a key partner for Amazon's delivery infrastructure in the U.S., handling millions of packages daily across the postal network.
Delivery Speeds and Service Types
Amazon USPS shipments typically include Standard and Expedited options, with delivery windows ranging from 2 to 5 business days for non-Prime addresses and 1 to 3 days for Prime members in eligible areas. Amazon Ground Hybrid uses USPS for the final leg of delivery, combining Amazon's long-haul network with USPS last-mile reach. For time-sensitive deliveries, Amazon may prioritize UPS or FedEx over USPS, but USPS still handles a significant share of Amazon's standard parcel volume. Real-time delivery estimates are shown at checkout based on the shipping address and carrier assignment.
Amazon's delivery speed with USPS depends on the originating facility, destination, and service level selected. Amazon's logistics data shows that USPS-partnered deliveries now represent a smaller share of total Amazon shipments compared to 2021, as Amazon expands its own air and ground fleet. Amazon's investment in its own delivery network has reduced reliance on USPS for Prime Now and same-day deliveries in major metros. However, USPS remains essential for Amazon's rural delivery strategy and for cost-effective shipping on lower-margin items.
Costs and Carrier Comparison
Amazon negotiates direct commercial rates with USPS, which are often lower than retail USPS prices, allowing Amazon to offer free or reduced-cost shipping on millions of items. USPS is generally cheaper than UPS or FedEx for lightweight, non-urgent packages, which is why Amazon uses it for standard deliveries and Amazon Day pickups. Amazon's shipping cost per package with USPS has been a key factor in its ability to offer low prices and fast delivery on a wide range of products. For a broader look at Amazon's shipping strategy, see this Forbes analysis here.
Amazon compares USPS, UPS, FedEx, and Amazon Logistics based on package size, weight, destination, and delivery promise. USPS is often the default carrier for Amazon's standard shipping tier, while Amazon uses its own fleet for same-day, next-day, and two-day Prime deliveries where feasible. Amazon's shipping cost data shows that USPS remains the most used carrier by volume for standard residential deliveries in the U.S. Amazon's multi-carrier model helps it manage peak season surges and maintain delivery reliability across different regions.