Plymouth County--treasurer 215 4th Ave Se Le Mars, IA 51031 Phone : (712) 546-7078 Business Category Government Offices-County Miscellaneous Personal Services Auto Tag Courier Legislative Bodies Public Finance Taxation & Monetary Policy Government Offices & Public Schools Plymouth County Of--treasurer, Motor Vehicle Registration Le Mars, IA 51031 Phone : (712) 546-7078 Business Category Automobile Dealers-New/Used Government Offices-County Automobile Registration Service Automotive Services Except Repair & Carwashes Government Offices & Public Schools