Longboat Key is a barrier island situated off of the central western coast of Florida in the United States of America. It is situated south of Tampa Bay, between Sarasota Bay and the Gulf of Mexico. It is within both Manatee County and Sarasota County. Longboat Key is divided almost equally geographically between the two counties, with the entire island located within the boundaries of the Town of Longboat Key, a Florida municipality incorporated in 1955. Longboat Key apartments for rent comparison page shows most up to date rent information on Longboat Key apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.