- Spade Island
- Stony Island
- Sun Manor Mobile Home Park
- Sunlake Estates Mobile Home Park
- Sancassa
- Sandfly Key
- Sans Souci
- Shaefer
- Shell Creek Resort Mobile Home Park
- Silcox Key
- Slip - Not Mobile Home Park
- Sparkman
- S S Mobile Park
- Sabal Palms Estates
- Saint George
- Sanders Mobile Home Colony
- Sanders Park
- Santa Barbara Shores
- Sea Estates Mobile Home Court
- Seminole Park Mobile Home Park
- Sheldon Mobile Home Court
- Shorewood
- Silver Shores
- Snowbird Haven Mobile Home Park
- Soroka Shores
- Sun Swept Isles
- Sunrise Heights
- Sunrise Key
- Sunshine Acres
- Sunshine Acres (historical)