There are 13 US Post Offices in Webster County serving a total of 36,973 residents equating to 2,844 residents per post office. It's estimated that approximately 59,013 packages are handled across the 13 county post offices annually. Webster County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 38,013. The county seat is Fort Dodge. The county was established January 15, 1851 and named after Daniel Webster, an American statesman. Webster County comprises the Fort Dodge, IA Micropolitan Statistical Area."