Duck Key

Duck Key is a census-designated place and unincorporated community in Monroe County, Florida, located on an island in the middle of the Florida Keys at approximately mile marker 61 on the Overseas Highway (U.S. 1). The community, which includes the neighboring island of Conch Key, had a population of 727 as of the 2020 census and covers a land area of 0.60 square miles.

The island is renowned for Hawks Cay Resort, a major luxury destination featuring Caribbean-style cottages, marinas, and recreational facilities. Historically, Duck Key was a site for salt manufacturing in the 1820s and 1830s; it remained uninhabited after the devastating 1935 Labor Day Hurricane until a causeway connected it to the mainland in 1953, sparking development by financier Bryan W. Newkirk.

Key characteristics of Duck Key include:

Geography: Situated oceanside of the Overseas Highway, between Marathon (9 miles southwest) and Islamorada (22 miles northeast).

Demographics: It has a median household income of $93,356 and a median home value of $1,157,787, reflecting its status as an upscale, exclusive community.

Infrastructure: The residential area consists of five smaller islands (Yacht Club, Harbour, Centre, Indies, and Plantation) connected by distinctive Venetian-style bridges adorned with pineapple ornaments.

Access: It is approximately 2 hours from Miami International Airport and 1 hour 20 minutes from Key West International Airport.

Duck Key, FL luxury real estate is characterized by high-value waterfront estates and a market driven by improved private aviation access. Recent data indicates a median listing price for luxury homes around $940,000, with the most expensive properties exceeding $12.5 million.

Market Trends and Pricing:

Price Range: Luxury single-family homes typically range from $899,000 to $3.9 million, with some exclusive estates listed up to $13.4 million.

Inventory: There are currently 32 luxury homes for sale, with a median listing price of $940,000 according to Redfin, while other sources cite an average listing price of $1.34 million.

Days on Market: Homes generally stay on the market for 51 to 130 days, with recent trends showing a slight slowdown in sales velocity compared to the previous year.

Waterfront Premium: Waterfront listings command significant premiums, with an average price of $4.47 million for waterfront homes versus $832,082 for waterfront condos.

Drivers of Luxury Demand:

Aviation Infrastructure: The completion of a $30.1 million runway relocation at Marathon International Airport in October 2025 allows for private jet access, with a 15-minute drive to many Duck Key estates.

High-End Transactions: The Middle Keys saw five transactions between $12 million and over $20 million in a recent six-month period, signaling strong interest from high-net-worth buyers.

Lifestyle Appeal: Duck Key is known for its deep-water dockage, access to the Gulf of Mexico and Atlantic Ocean, and proximity to the Hawks Cay Resort.