Weston County is a county in the U.S. state of Wyoming. As of the 2020 United States Census, the population was 6,838. Its county seat is Newcastle. Its east boundary line abuts the west line of the state of South Dakota. Wikipedia
County seat: Newcastle
Area: 2,400 mi²
Population: 6,860 (2022)
Congressional district: At-large
Named for: Jefferson B. Weston