The Sharecropper barracks is a location inside NCR Sharecropper Farms in 2281. It's the office and sleeping quarters for the sharecroppers who work on the land and in the nearby greenhouses.
To one side there are 8 (double) beds with footlockers, lockers and a bathroom, to the other side there are 4 desks with radios on them.
Chinese Army: Special Ops Training Manual - In the northeast corner, on the floor near the south wall.
The Sharecropper barracks appear only in Fallout: New Vegas.