Fleming Island Plan Fleming Island is a subdivision within Fleming Island, the Clay County peninsula community on the west bank of the St. Johns River, south of Doctors Lake and north of Black Creek. Fleming Island grew from riverfront land into a largely residential area of planned neighborhoods, shopping and schools along the main highway corridor, while keeping a quieter, tree-covered character away from its busier edges. Homes in and around the subdivision are part of that settled Fleming Island pattern, with residential streets rather than through traffic and daily services a short drive away. Public schools are served by Clay County District Schools, the district covering Fleming Island and neighboring Orange Park. Browse current Fleming Island Plan Fleming Island homes for sale below.