Neighborhood · Marathon, Florida
Tranquility Bay
Small-scale island living in the heart of Marathon
2
Homes for sale
$878,750
Median list price
$666
Avg price / sqft
38
Median days on market
Tranquility Bay sits in the middle of the Florida Keys chain, where the pace slows down and the water is never far from view. This is a compact, waterfront-focused pocket of Marathon — every active listing here touches the water, and homes tend toward the manageable side, with a median size around 1,320 square feet. Families are zoned for Stanley Switlik Elementary School and Marathon School, both close by.
For a buyer today, this is a thin, high-value market. There are just 2 active listings, both waterfront, priced from $872,500 to $885,000 with a median of $878,750 — so options are limited and you'll want to move decisively when the right one appears. You can track new inventory as it lands on the live map.
Tranquility Bay is a community in Marathon, Florida.
Quick facts
$872,500 – $885K price range
1,320 sqft median home
1 sold in 12 months
On the market now
Homes for sale in Tranquility Bay
$885,000
2600 Overseas Hwy # 87, Marathon FL 33050, MARATHON
3 bd · 2.5 ba · 1,320 sqft
$872,500
2600 Overseas Hwy # 85, Marathon FL 33050, MARATHON
3 bd · 2.5 ba · 1,320 sqft
Every active listing inside the Tranquility Bay boundary
Open full map search →Find your fit
Browse Tranquility Bay
By feature — on the live map
The numbers that matter
The Tranquility Bay market
1
Sold, last 12 months
$685,000
Median sold price
98%
Sale-to-list ratio
What sellers actually get vs asking
105 days
Median time to sell
Tranquility Bay vs Marathon
Median list price
Price per sqft
Days on market
Live Stellar MLS data — every listing and closed sale inside the Tranquility Bay boundary. Rolling medians smooth single-month swings in small communities.
For the school run
Schools Tranquility Bay is zoned for
Attendance boundaries overlapping this community — always verify zoning with the district.
What it really costs
Owning here
Owning the median Tranquility Bay home
≈ $5,522/mo
$878,750 median · 20% down · 30-yr fixed at 6.9% · taxes/HOA from live listing data · insurance is a Florida estimate.
Population
233
Median age
47
Median income
$42,500
Median home value
$383,300
Beyond the listings
Living in Tranquility Bay
Hobbies & Interests
Top 10% 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.
Entertainment
Top 17% in the U.S.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.
Culture
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.
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.
Beliefs
Local Engagement
These citizens want to make their neighborhood a better, more beautiful place to live. They're attentive to the needs and affairs of the local community.
Attitudes
Volunteering & Giving
Expressing a desire to give back and do good for the community, this behavior emphasizes charity. Common activities include volunteering, fundraisers, and donations.
Straight answers
Tranquility Bay FAQs
Is Tranquility Bay a good place to live?+
It's a small, waterfront-oriented neighborhood in the middle of the Florida Keys, which suits buyers who want easy water access and a quieter pace. Families are zoned for Stanley Switlik Elementary School and Marathon School, and you're central to the rest of Marathon's amenities.
Is it expensive to buy here?+
Yes, this is a premium waterfront pocket — the median list price is $878,750, with the two current listings ranging from $872,500 to $885,000. Pricing runs around $666 per square foot, which is typical for water-access property in the Keys.
What do homes cost in Tranquility Bay?+
Currently there are 2 active listings, both waterfront, priced between $872,500 and $885,000. Over the past year one home sold at a median of $685,000, so recent closings have come in below today's asking prices.
How is the market right now?+
It's a tight market with just 2 active Marathon homes for sale in this neighborhood and only 1 sale in the last 12 months. Homes take a median of 38 days to sell and fetch about 98% of asking, so serious buyers should be ready to act.
What about HOA fees and property taxes?+
HOA data isn't available for the current listings here, so confirm any dues directly with the seller. Property taxes run a median of about $8,189 per year, which is worth factoring into your budget.
Keep exploring
More Marathon neighborhoods
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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