area - Setting default units for Shape_Area to be Acres using ArcGIS Desktop

When I create a new feature layer polygon, how do I set the default in Shape_Area to read out in Acres?

Answer

You can't. The Shape.Area field (I'm guessing you meant Shape.Area and not Shape_Area, since Shape.Area is built in to geodatabase layers) will give area in square units of whatever linear distance unit the feature class uses. So if your data is in meters, the Shape.Area field will show square meters.