Treasure Island is a charming residential neighborhood in Marathon, Florida (ZIP 33050), situated in the heart of the Middle Keys. This small subdivision features single-family homes on quiet, often dead-end streets like Treasure Road, providing a serene escape just blocks from the iconic Sombrero Beach. The community emphasizes privacy and a relaxed island lifestyle, with many properties offering water views or easy access to boating on the Atlantic side.

Residents appreciate the neighborhood's low-key atmosphere, perfect for families or retirees who value proximity to nature without the density of larger developments. The area is surrounded by the natural beauty of the Florida Keys, including opportunities for fishing, snorkeling, and exploring the nearby Seven Mile Bridge. Homes here are typically modest to mid-sized, blending into the tropical landscape with features suited to coastal living.

Lifestyle in Treasure Island revolves around outdoor activities and the unique Keys culture. The subdivision's location makes it convenient for day trips to Key West or the Upper Keys while maintaining a peaceful home base. Community events are often city-wide through Marathon, fostering a tight-knit feel among residents. Real estate in the area highlights its exclusivity as a private enclave near public beaches and marinas.

Notable aspects include its appeal for short-term rentals and vacation properties, though primary residences dominate. The neighborhood benefits from Marathon's infrastructure, including local shops, restaurants, and healthcare. Overall, Treasure Island offers an authentic, unpretentious Florida Keys living experience focused on water access, tranquility, and community simplicity.