Withholding of Mail Orders Withholding of Mail Orders is enforced by postmasters at the cities listed below.   State, City, ZIP Code Names and Addresses Covered ME, Skowhegan 04976-2316 Any and All of Various Names Except the Surname Covais, 6 North School St. NC, Mount Holly 28120-0064 Any and All of Various Names Other Than the Name Wanda Jones, P.O. Box 64 — Judicial Officer, 5-16-13