Key Colony Beach

Key Colony Beach is a waterfront community of single family homes, condos, and townhomes in Marathon, Florida, with a range of options priced between $490,000 and $4,195,000. There are currently a total of 6 homes for sale in Key Colony Beach. The smallest Key Colony Beach home presently available is a two bedroom two bathroom residence that is 1,234 square feet, and the largest of the Key Colony Beach homes currently on the market has five beds and four baths and is a 9,585 square foot (4,596SF Under Air) residence.

Key Colony Beach amenities include a clubhouse, swimming pool, and cabana. Sports facilities include a championship golf course, tennis courts, and pickleball courts. Onsite dining venues consist of a picnic area, and a barbecue area.

Boating enthusiasts will love the fact that the community has boat facilities including a boat dock. There is also a community park, a playground, as well as private beach access.

Pets are allowed in Key Colony Beach although there are certain breed restrictions. There is a limit of how many pets you may have.

There is one commercial airport that serve Key Colony Beach - Key West International (EYW), which is 48 miles away.

Key Colony Beach real estate activity on the Marathon MLS during the past year (as of September 2025) reflects two homes changing hands, with an average asking price of $8,324,500 and an average selling price of $6,725,000. This represents a list-to-sell price ratio of 81% and $718 per square foot. During this period, Key Colony Beach homes for sale have taken an average of 190 days to sell.

In addition, there are numerous other communities in Marathon to choose from, or you may browse all available Marathon Real Estate, including some new construction opportunities. Homes for sale in Key Colony Beach are selling quickly. Set up a new listing alert, and we will notify you immediately when a new waterfront home in Key Colony Beach hits the market. You can also always contact your ZFC Real Estate agent, who would happily assist you further with all your Florida real estate needs.

Key Colony Beach Homes For Sale

$4,195,000

MLS#RX-11024553

1330 Coury Drive
Key Colony Beach, FL 33051

5

4

4

9,585 SqFt

Pool

Ocean Access

0.436 Acres

368 Days

$4,150,000

MLS#AX-11868876

1000 W Ocean Dr
Key Colony, FL 33051

4

4

2

4,596 SqFt

Ocean Access

0.196 Acres

32 Days

$969,900

MLS#AX-11860524

160 10th St
Marathon, FL 33051

2

2

1,521 SqFt

Water Front

0.095 Acres

27 Days

Reduced

$590,000

$594,900

MLS#FX-10484309

101 11th St Lot 45
Marathon, FL 33051

2

2

1,000 SqFt

Ocean Front

2.313 Acres

242 Days

Reduced

$520,000

$549,000

MLS#AX-11809002

601 W Ocean Dr Dr 411c
Key Colony, FL 33051

2

3

1,475 Sq Ft

Ocean Access

130 Days

Reduced

$490,000

$599,000

MLS#RX-11078483

601 W Ocean Dr Drive 203a
Key Colony Beach, FL 33051

2

2

1,234 Sq Ft

Ocean Front

3.095 Acres

171 Days

6 Active Listings in Key Colony Beach