Neighborhood · Marathon, Florida
Key Colony Beach
A pocket-sized island city in the Middle Keys
1
Homes for sale
$749,000
Median list price
$771
Avg price / sqft
1
Median days on market
Key Colony Beach is a self-contained island community just off Marathon in the Middle Keys, where canal-front living and a walkable, low-key pace are the whole point. It's the kind of place where boaters keep their vessel steps from the back door and daily life runs at island speed. Families here are zoned for Marathon School and Stanley Switlik Elementary School, and the broader Marathon homes for sale market sits just across the bridge.
Inventory here is thin — there's currently a single active listing at $749,000, so buyers should be ready to move quickly and watch the live map for new arrivals. Over the last year only two homes sold, at a median of $673,500, and sellers averaged 96% of asking, which tells you demand is steady even when supply isn't. Homes here are compact and premium — the median is under 1,000 sqft at roughly $771 per square foot.
Key Colony Beach is a community in Marathon, Florida.
Quick facts
$749,000 – $749K price range
972 sqft median home
2 sold in 12 months
On the market now
Homes for sale in Key Colony Beach
Every active listing inside the Key Colony Beach boundary
Open full map search →Find your fit
Browse Key Colony Beach
By feature — on the live map
The numbers that matter
The Key Colony Beach market
2
Sold, last 12 months
$673,500
Median sold price
96%
Sale-to-list ratio
What sellers actually get vs asking
193 days
Median time to sell
Key Colony Beach vs Marathon
Median list price
Price per sqft
Days on market
Live Stellar MLS data — every listing and closed sale inside the Key Colony Beach boundary. Rolling medians smooth single-month swings in small communities.
For the school run
Schools Key Colony Beach is zoned for
Attendance boundaries overlapping this community — always verify zoning with the district.
What it really costs
Owning here
Owning the median Key Colony Beach home
≈ $4,698/mo
$749,000 median · 20% down · 30-yr fixed at 6.9% · taxes/HOA from live listing data · insurance is a Florida estimate.
Population
278
Median age
65
Median income
$99,761
Median home value
$936,452
Beyond the listings
Living in Key Colony Beach
Hobbies & Interests
Top 8% in the U.S.Wanderlust
Always thinking about their next destination, this population loves exploring new places abroad or right in their own backyard. They hold onto past trips by sharing their favorite memories and pictures year round.
Culture
Top 9% in the U.S.Sites to See
This population finds the most beautiful sites just by looking up. Sunrise, sunset or sometime in between, these people love to marvel at man-made and natural wonders.
Lifestyles
Top 16% in the U.S.Wealth Signaling
Interested in the finer things life has to offer, this population wants to display their lifestyle by discussing luxury products. Often references jewelry, cars, and home features.
Entertainment
Live & Local Music
This population follows the music. From local bands to current acts at the local venue, you can find these people researching band tours and how to get backstage passes.
Food & Drink
Trendy Eats
Meals are a social experience, and these foodies take it to the next level. This population can't wait to snap a pic of their plate and share it before chowing down.
Relationships
Happily Ever After
Whether it's the stress of wedding planning or looking back on that special day, this population has their eyes and hearts focused on lifelong commitment.
Straight answers
Key Colony Beach FAQs
Is Key Colony Beach a good place to live?+
It's a small, self-contained island city off Marathon built around canal-front homes and a relaxed, walkable pace. Families are zoned for Marathon School and Stanley Switlik Elementary School, and it suits buyers who want boating access and quiet over big-city amenities.
Is Key Colony Beach expensive?+
It carries an island premium — the average price runs about $771 per square foot, and the single active listing is $749,000. Homes are compact, with a median size under 1,000 sqft, so you're paying for location and water access more than square footage.
What do homes cost in Key Colony Beach?+
The current active listing is priced at $749,000, and over the last 12 months two homes sold at a median of $673,500. Expect compact, waterfront-oriented properties rather than sprawling floor plans.
How is the Key Colony Beach market?+
It's a low-inventory, quick-moving market — just one active listing and a median of one day on market. Sellers averaged 96% of asking over the past year, so serious buyers should track new listings on the live map and be ready to act.
What are the HOA fees and property taxes?+
HOA data isn't currently available for the active inventory here, so budget on a per-property basis. The median annual property tax runs about $6,500, which is a useful baseline when you're pricing out ownership costs.
Neighborhood boundary by edgeAI; listings matched to the polygon. IDX information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by Stellar MLS.
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