St Charles County Mis Department 201 N 2nd St # 313 Saint Charles, MO 63301 Phone : (636) 949-7480 St Charles County Mis Department Business Category Government Offices-County Legislative Bodies St. Charles County Of--information Systems 201 N 2nd St Saint Charles, MO 63301 Phone : (636) 949-7480 Business Category Government Offices-County Government Offices & Public Schools