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 $435,000 and $4,195,000. There are currently a total of 13 homes for sale in Key Colony Beach. The smallest Key Colony Beach home presently available is a two bedroom one bathroom residence that is 934 square feet (750SF Under Air living space), and the largest of the Key Colony Beach homes currently on the market has five beds and three baths and is a 9,585 square foot (3,600SF Under Air) residence.

The Key Colony Beach community offers a plethora of amenities for its residents to enjoy, including a clubhouse, swimming pool, and cabana. Sports facilities include a championship golf course, tennis courts, pickleball courts, Bocce ball, and basketball court. Onsite dining venues consist of a restaurant, 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, a dog park, walking or jogging trails, 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, and there is a restriction on pet size.

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 May 2026) reflects four homes changing hands, with an average asking price of $1,067,225 and an average selling price of $993,750. This represents a healthy list-to-sell price ratio of 93% and $645 per square foot. During this period, Key Colony Beach homes for sale have taken an average of 192 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
Key Colony Beach, FL

5

4

4

9,585 SqFt

Pool

Ocean Access

0.44 Acres

589 Days

$3,850,000

MLS#MFROM719377

770 9th St
Key Colony Beach, FL 33051

4

4

2

4,647 SqFt

Pool

Water Front

0.25 Acres

75 Days

Reduced

$2,275,000

$2,450,000

MLS#AX-11886023

511 4th St
Key Colony, FL 33051

4

3

1

2,937 SqFt

Water Front

0.152 Acres

224 Days

$1,550,000

MLS#B26002035

340 E Ocean Drive, Key Colony Beach, Fl
Key Colony Beach, FL

5

3

3,712 SqFt

Ocean Access

0.13 Acres

58 Days

$1.5 Million

MLS#MFRN6139112

8 Sadowski Cswy
Key Colony Beach, FL 33051

3

3

1

2,175 SqFt

Pool

Water Front

0.05 Acres

341 Days

Reduced

$1,225,000

$1,299,999

MLS#RX-11156123

1133 W Ocean Drive 17
Key Colony Beach, FL 33050

2

3

1,804 Sq Ft

Pool

Ocean Front

113 Days

Reduced

$899,995

$950,000

MLS#AX-11959094

410 10th St
Key Colony, FL 33051

2

2

4

1,279 SqFt

Water Front

0.095 Acres

94 Days

$849,000

MLS#AX-11963904

151 10th St
Marathon, FL 33051

2

2

1

1,536 SqFt

Ocean Access

0.1 Acres

87 Days

$849,000

MLS#B26020292

34 7th Street33051
Key Colony Beach, FL

2

2

1,241 SqFt

Ocean Access

0.05 Acres

17 Days

Reduced

$599,000

$615,000

MLS#FX-10556094

101 11th Street
Marathon, FL 33050

2

2

1,000 SqFt

Ocean Front

66 Days

Reduced

$585,000

$595,000

MLS#FX-10556097

101 11th Street33051
Marathon, FL

2

2

1,000 SqFt

Ocean Front

66 Days

Reduced

$515,000

$525,000

MLS#AX-11895846

251 2nd St
Key Colony, FL 33051

2

1

934 SqFt

0.076 Acres

207 Days

13 Active Listings in Key Colony Beach