82'x236' building lot in prime location on Ono Island! Ono Island is a 5.5-mile (8.9 km) long barrier island in southern Baldwin County, Alabama, at the mouth of Perdido Bay on the northern Gulf of Mexico. It is bordered by Bayou St. John to the north and Old River to the south. Surrounding communities include Perdido Key, Florida to the south and east and Orange Beach, Alabama to the west. Life on the island includes 24/7 security, private boat launch, Ono North recreational center and sidewalks for all your biking/walking needs.