Duval County Court Flag Listing Court: Duval County Court Category: County Court, Duval, San Diego Website Address: http://www.co.duval.tx.us/default.aspx?name=CountyOffices.Judge Phone Number: 361-279-6204 Address: 400 E. Gravis St San Diego, Texas 78384 Judge: Saenz, Gilbert ← Bexar County Court → Nolan County Court