Medina County Registration & Titling – Castroville 8366 FM 471 SouthCastroville Texas 78009 TX Medina 8366 FM 471 SouthDirections (830) 931-4040 Monday 08:00 am - 05:00 pm Tuesday 08:00 am - 05:00 pm Wednesday 08:00 am - 05:00 pm Thursday 08:00 am - 05:00 pm Friday 08:00 am - 05:00 pm Saturday Closed Sunday Closed