We have found 32 properties on Bienville Blvd, Dauphin Island, AL. Average price per square feet on Bienville Blvd is $124. It is 2.4% lower than average price per sqft Dauphin Island. Average sale price on Bienville Blvd is $203,119. It is 1.1% lower than average sale price in Dauphin Island.