There are 5 US Post Offices in Kerr County serving a total of 48,654 residents equating to 9,731 residents per post office. It's estimated that approximately 77,657 packages are handled across the 5 county post offices annually. Kerr County is a county located on the Edwards Plateau in the U.S. state of Texas. As of the 2010 census, its population was 49,625. Its county seat is Kerrville. The county was named by Joshua D. Brown for his fellow Kentucky native, James Kerr, a congressman of the Republic of Texas. The Kerrville, TX Micropolitan Statistical Area includes all of Kerr County."