There are 16 US Post Offices in Walworth County serving a total of 103,131 residents equating to 6,446 residents per post office. It's estimated that approximately 164,609 packages are handled across the 16 county post offices annually. Walworth County is a county located in the U.S. state of Wisconsin. As of the 2010 census, the population was 102,228. Its county seat is Elkhorn. The county was created in 1836 from Wisconsin Territory and organized in 1839. It is named for Reuben H. Walworth. Walworth County comprises the Whitewater-Elkhorn, WI Micropolitan Statistical Area and is included in the Milwaukee-Racine-Waukesha, WI Combined Statistical Area Lake Geneva, the University of Wisconsin-Whitewater, and Alpine Valley Resort, and Music Theatre are located in Walworth County."