Natrona County, Wyoming

Natrona County is a county in the U.S. state of Wyoming. As of the 2020 United States census, the population was 79,955, making it the second-most populous county in Wyoming. Its county seat is Casper. Natrona County comprises the Casper metropolitan area. In 2010, the center of population of Wyoming was in Natrona County, near Alcova.