Mason City Driver License Office 1622 S Federal Ave.Mason City Iowa 50401 IA USA 1622 S Federal Ave.Directions (641) 423-8391 Monday Closed Tuesday 08:30 am - 05:00 pm Wednesday 08:30 am - 05:00 pm Thursday 08:30 am - 05:00 pm Friday 08:30 am - 05:00 pm Saturday Closed Sunday Closed