There are 3 US Post Offices in Hitchcock County serving a total of 2,569 residents equating to 856 residents per post office. It's estimated that approximately 4,100 packages are handled across the 3 county post offices annually. Hitchcock County is a county located in the U.S. state of Nebraska. As of the 2010 census, the population was 2,908. Its county seat is Trenton. In the Nebraska license plate system, Hitchcock County is represented by the prefix 67 (it had the sixty-seventh-largest number of vehicles registered in the county when the license plate system was established in 1922)."