There are 5 US Post Offices in Allamakee County serving a total of 13,632 residents equating to 2,726 residents per post office. It's estimated that approximately 21,758 packages are handled across the 5 county post offices annually. Allamakee County (pronounced AL-uh-muh-KEY) is the northeastern-most county located in the U.S. state of Iowa. As of the 2010 census, the population was 14,330. Its county seat is Waukon."