The U.S. Postal Service needs effective and productive operations to fulfill its mission of providing prompt, reliable, and affordable mail service to the American public. It has a vast transportation network that moves mail and equipment among approximately 308 processing facilities and 31,100 post offices, stations, and branches. The Postal Service is transforming its processing and logistics networks to become more scalable, reliable, visible, efficient, automated, and digitally integrated. This includes modernizing operating plans and aligning the workforce to meet marketplace needs; leveraging emerging technologies to provide world-class visibility and tracking of mail and packages in near real time; and optimizing the surface and air transportation network. The U.S. Postal Service Office of Inspector General (OIG) reviews the efficiency of mail processing operations at facilities across the country and provides management with timely feedback to further the Postal Service’s mission.
This report presents the results of our self-initiated audit of the efficiency of operations at the Detroit Processing and Distribution Center (P&DC) in Detroit, MI (Project Number 26-086). We judgmentally selected the Detroit, MI, P&DC based on a review of Leg 1 and Leg 3 failures; workhours; scanning compliance; and late, canceled, and extra trips. The Detroit P&DC is in the Lakeshores Division and processes letters, flats, and parcels. The Detroit P&DC services six 3-digit ZIP Codes in urban and rural communities.
As of February 28, 2026, the Detroit P&DC’s employee availability was 81.8 percent for processing and 89.7 percent for logistics. The Postal Service’s Employee Availability goal for fiscal year (FY) 2026 was 89.6 percent for processing and 93 percent for logistics.
