There are 4 US Post Offices in Comal County serving a total of 91,246 residents equating to 22,812 residents per post office. It's estimated that approximately 145,639 packages are handled across the 4 county post offices annually. Comal County is a county located on the Edwards Plateau in the U.S. state of Texas. As of the 2010 census, its population was 108,472. Its county seat is New Braunfels. Comal County is part of the San Antonio-New Braunfels, TX Metropolitan Statistical Area.