Dallas County Tax Office – North Dallas 10056 Marsh LaneDallas Texas 75229 TX Dallas 10056 Marsh LaneDirections (214) 653-7811 Monday 08:00 am - 04:30 pm Tuesday 08:00 am - 04:30 pm Wednesday 08:00 am - 04:30 pm Thursday 08:00 am - 04:30 pm Friday 08:00 am - 04:30 pm Saturday Closed Sunday Closed