Provadia is a town in northeastern Bulgaria, part of Varna Province, located in a deep karst gorge along the Provadiya River not far from t…Provadia is a town in northeastern Bulgaria, part of Varna Province, located in a deep karst gorge along the Provadiya River not far from the Bulgarian Black Sea Coast. It is the administrative centre of Provadia Municipality. As of December 2009, the town had a population of 12,901.