Audit Reports

Background

The U.S. Postal Service’s mission is to provide timely, reliable, secure, and affordable mail and package delivery to more than 160 million residential and business addresses across the country. The U.S. Postal Service Office of Inspector General (OIG) reviews delivery operations at facilities across the country and provides management with timely feedback in furtherance of this mission. 

This interim report presents the results of our self initiated audit of delivery operations and property conditions at the Milam Dairy Branch in Miami, FL. The Milam Dairy Branch is in the Florida 3 District of the Southern Area and serves about 64,064 people in ZIP Code 33178, which is considered a predominantly urban area. Specifically, 63,190 (98.6 percent) live in urban communities and 874 (1.4 percent) live in rural communities.

This delivery unit has 35 city routes and one rural route. The unit also has four contract delivery service routes. From December 27, 2025, through January 23, 2026, the delivery unit had three supervisors assigned. In February 2026, the unit manager was assigned to this unit from a different facility. In addition, the unit had an acting supervisor during our visit. The Milam Dairy Branch falls under the Miami Post Office for employee availability measurement. As of January 23, 2026, the year-to-date employee availability rate for the Miami Post Office was 89.8 percent, which is less than the Postal Service’s retail and delivery operations employee availability goal of 93.9 percent for fiscal delivery units the OIG reviewed during the week of March 2, 2026, that are serviced by the Royal Palm Processing and Distribution Center.