Key Colony Beach, Florida
Come prepared to fall in love with Key Colony Beach; many visitors arrive for a week and start imagining a much longer stay in this small city in the heart of the Florida Keys. Set in the Middle Keys between Atlantic Ocean waters and the Gulf side, Key Colony Beach lies in Monroe County just east of Marathon and southwest of Islamorada, about 50 miles from Key West. It also sits close to the Florida Reef Tract, the only living coral barrier reef in the continental United States.

About the Community
Developer Phil Sadowski helped establish the community in the early 1950s, and the City of Key Colony Beach was incorporated in 1957. The area was originally known as Shelter Key and began as a low-lying island with a sandy oceanfront. Over time, dredge-and-fill work expanded the island and helped shape the planned residential and resort community visitors see today.

Today, Key Colony Beach remains one of the smallest municipalities in the Keys, with fewer than 1,000 year-round residents and a much larger seasonal population during peak travel months. Vacation rentals and condominiums are popular with returning guests, and the city is designed for relaxed outdoor living. Visitors can enjoy golf, tennis, basketball, neighborhood parks, and walkable routes for cycling, jogging, and sightseeing along the causeway and the ocean-side drives.
Important Links
The city is known for its community spirit and seasonal gatherings. One of the best-known traditions is Key Colony Beach Day, typically celebrated in March and often featuring arts and crafts vendors, food, music, and family-friendly activities. Event schedules and sponsoring organizations can change, so it is smart to check local listings before you go.
Vicinity of Key Colony Beach
Additional Details
Other recurring local happenings have included food-centered fundraisers, wellness walks, and art-in-the-park style exhibitions. As with many small communities, annual events and dates may vary from year to year, but visitors can usually expect an active social calendar during the busier winter and spring seasons.

Key Colony Beach is a strong base for fishing, diving, boating, paddle sports, and easy day trips around the Middle Keys. Nearby waters are popular for snorkeling and offshore adventures, while restaurants in and around the area offer fresh seafood and casual island dining. For many travelers, the appeal is simple: a quieter Keys atmosphere, tropical scenery, and memorable sunsets.

Key Colony Beach is also known for carefully maintained neighborhoods and a low-rise, residential character that helps preserve its relaxed atmosphere. The city’s location makes it convenient for exploring other attractions in the Florida Keys, including the Dolphin Research Center and Crane Point Museum in nearby Marathon. Whether you are planning a laid-back beach stay, a boating getaway, or a longer Keys road trip, Key Colony Beach offers a peaceful place to slow down.

