Mansfield is a town in Douglas County, Washington, United States. Take a look below for 15 amazing and fun facts about Mansfield, Washington, United States. 1. It is part of the Wenatchee–East Wenatchee Metropolitan Statistical Area. 2. The population was 320 at the 2010 census. 3. R.E. Darling named Mansfield in 1905 after his hometown…