Buena Vista County
There are 9 US Post Offices in Buena Vista County serving a total of 20,506 residents equating to 2,278 residents per post office. It's estimated that approximately 32,730 packages are handled across the 9 county post offices annually. Buena Vista County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 20,260. Its county seat is Storm Lake. The county is named for the final victory field of General Zachary Taylor in the Mexican-American War. Buena Vista County comprises the Storm Lake, IA Micropolitan Statistical Area."