There are 18 US Post Offices in Wyoming County serving a total of 41,089 residents equating to 2,283 residents per post office. It's estimated that approximately 65,583 packages are handled across the 18 county post offices annually. Wyoming County is a county located in the U.S. state of New York, located in the state's western area. As of the 2010 census, the population was 42,155. The county seat is Warsaw. The name is from a modified Delaware Indian word meaning \"broad bottom lands\". Wyoming County was formed from Genesee County in 1841."