Wadsworth is a census-designated place (CDP) in Washoe County, Nevada, United States. The population was 834 at the 2010 census. It is part of the Reno–Sparks Metropolitan Statistical Area. The town was named for General James S. Wadsworth, a Civil War general killed at the battle of the Wilderness in 1864. It was given this name by Leland Stanford of the Central Pacific Railroad as a favor to General Irvin McDowell, whom Wadsworth had served under during the Civil War.