Chances are if you didn't study and love Econ. like myself, you will not care too much about this, but for those of you who share the passion of derivatives and equilibrium (Nash or otherwise) I present to you, How Peace Corps Workers are counted in the 2010 census;
"Thank you for your inquiry. Military and federal civilian employees and their dependents (including the Peace Corps) who are serving overseas will be counted in their home state, using administrative record counts from federal agencies. These federal employees will be counted for apportionment purposes only."