There are 7 US Post Offices in Wright County serving a total of 13,340 residents equating to 1,906 residents per post office. It's estimated that approximately 21,292 packages are handled across the 7 county post offices annually. Wright County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 13,229. The county seat is Clarion. The county was formed on January 15, 1851, and named after Silas Wright, a governor of New York, and Joseph Albert Wright, a governor of Indiana."