There are 10 US Post Offices in Wells County serving a total of 27,439 residents equating to 2,744 residents per post office. It's estimated that approximately 43,796 packages are handled across the 10 county post offices annually. Wells County is a county located in the U.S. state of Indiana. As of the 2010 census, the population was 27,636. The county seat is Bluffton.