Dumas Revenue Office 710 A Hwy. 65 SouthDumas Arkansas 71639 AR USA 710 A Hwy. 65 SouthDirections (870) 382-2950 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