There are 1 US Post Offices in Gosper County serving a total of 1,836 residents equating to 1,836 residents per post office. It's estimated that approximately 2,930 packages are handled across the 1 county post offices annually. Gosper County is a county located in the U.S. state of Nebraska. As of the 2010 census, the population was 2,044. Its county seat is Elwood. The county was formed in 1873 and later organized in 1881. It was named after John J. Gosper, a Secretary of State of Nebraska. Gosper County is part of the Lexington, NE Micropolitan Statistical Area. In the Nebraska license plate system, Gosper County is represented by the prefix 73 (it had the seventy-third-largest number of vehicles registered in the county when the license plate system was established in 1922)."