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Key Biscayne
Key Biscayne

FL

Key BiscayneCity Guide

A 1.2-square-mile barrier-island village across one causeway, bracketed by two state parks.

Median sale price$1.4M
Population~15,293
Area1.2 sq mi (land)
Incorporated as Village1991
K-8 Niche gradeA− (#44 FL)

Key Biscayne is a 1.2-square-mile barrier island at the southern end of Miami-Dade, reached from the mainland by the Rickenbacker Causeway and nothing else. Two-thirds of the island is public land: Crandon Park caps the north, Bill Baggs Cape Florida State Park caps the south, and the residential Village sits in the 1.2 square miles between them.

The Village incorporated in 1991 — the first new municipality in Miami-Dade in fifty years. Population today is about 15,293, the tax base just crossed $11.6 billion, and the millage rate (3.0777 in FY2026) remains the lowest in the county. Most of the housing stock is oceanfront and bayfront condos; single-family homes line the village's interior streets and the Mashta and Harbor Drive perimeters.

The market in 2026

The 2026 market has been a buyer's market by Miami standards. Redfin's March 2026 dashboard shows a median sale price of about $1.4M, down 24% year-over-year, with median days-on-market at 183 (vs 105 a year earlier). At the top of the building stack, Ocean Club units listed in April 2026 ranged from roughly $1.6M (older lake-side villas) to $10M (high-floor Ocean Tower lines). Oceana averages around $2,300 per square foot.

What you're buying into is geography. Beach access, two state parks, a Niche A− K-8 school, and the most expensive bridge problem in Miami-Dade — see Key Biscayne homes for sale for the live inventory.

Key Details

What makes Key Biscayne special

Who lives here

A tight-knit village of about 15,000 — a Latin American–heavy mix of professionals, retirees, and international second-home owners. Most resident families know each other by school or building. Day-to-day life is small-town inside a metro of 6 million.

The market

Mostly oceanfront and bayfront condos; single-family is scarce. Redfin's March 2026 median is $1.4M, down 24% YoY, with 183 days on market. Trophy buildings — Ocean Club, Oceana, Grand Bay Ritz-Carlton Residences — set the top; older 1980s towers anchor the bottom. The 2026 SIRS reserve rules apply to nearly every condo on the island.

Getting around

One way on, one way off. The Rickenbacker Causeway is the only road — toll $2.25 with transponder, $3.00 without. The Bear Cut Bridge replacement is in PD&E study through March 2027, with a separate $4.1M rehab on the West Bridges running in 2026. Metrobus Route 102 connects to Brickell; everything else is by car or by bike.

Beaches and parks

More than two-thirds of the island is park. Crandon Park covers ~808 acres at the north end with two miles of Atlantic beach; Bill Baggs Cape Florida State Park covers ~409 acres at the south end and contains the Cape Florida Lighthouse (1825), the oldest standing structure in Miami-Dade.

Schools

The Village's public option, Key Biscayne K-8 Center, holds an A− Niche grade and ranks #44 among Florida public K-8s for 2026 — though local reporting in March 2026 flagged enrollment and middle-school ranking slipping. Across the causeway on Virginia Key, MAST Academy (grades 6–12) ranks in the top 1% of Florida public schools.

Climate and flood risk

This is a barrier island. First Street rates Key Biscayne's 30-year flood risk as extreme; 1,504 properties are exposed in a 1-in-100-year event. The SE Florida Regional Compact projects 10–17 inches of sea-level rise by 2040. Hurricane Andrew (1992) and Irma (2017) both made direct hits; carrying costs reflect that reality.

Recently Listed

For Sale in Key Biscayne

NEW
119 HARBOR DR - 112
$3,300,000
3bd2ba1,554sqft
119 HARBOR DR
MLS A120821211 day ago
NEW
195 SUNRISE DR, Unit 7 - 1
$529,000
1bd1ba790sqft
195 SUNRISE DR, Unit 7
MLS A120819102 days ago
NEW
255 SUNRISE DR, Unit 307 - 118
$489,000
1bd1ba676sqft
255 SUNRISE DR, Unit 307
MLS A120816012 days ago
NEW
100 OCEAN LN DR, Unit 303 - 117
$505,000
1bd2ba870sqft
100 OCEAN LN DR, Unit 303
MLS A120816132 days ago
NEW
596 FERNWOOD RD, Unit B - 124
$2,795,000
3bd4ba1,650sqft
596 FERNWOOD RD, Unit B
MLS A120808793 days ago
NEW
544 WARREN LN - 159
$8,000,000
6bd6ba1,044sqft
544 WARREN LN
MLS A120798115 days ago

Recently Listed

For Rent in Key Biscayne

NEW
151 CRANDON BLVD, Unit 137 - 111
$5,800
2bd2ba1,532sqft
151 CRANDON BLVD, Unit 137
MLS A120820461 day ago
NEW
255 SUNRISE DR, Unit 307 - 118
$2,799
1bd1ba676sqft
255 SUNRISE DR, Unit 307
MLS A120817362 days ago
NEW
1121 CRANDON BLVD, Unit E1006 - 137
$7,500
2bd2ba1,409sqft
1121 CRANDON BLVD, Unit E1006
MLS A120813312 days ago
NEW
199 OCEAN LN DR, Unit 206 - 126
$6,500
2bd2ba1,260sqft
199 OCEAN LN DR, Unit 206
MLS A120792433 days ago
NEW
210 SEAVIEW DR, Unit 511 - 115
$5,500
2bd2ba1,330sqft
210 SEAVIEW DR, Unit 511
MLS A120793163 days ago
NEW
765 CRANDON BLVD, Unit 507 - 161
$16,500
3bd4ba3,091sqft
765 CRANDON BLVD, Unit 507
MLS A120804073 days ago

Lifestyle & Highlights

The best of Key Biscayne

Where to eat

Boater's Grill

Waterfront seafood inside Bill Baggs at No Name Harbor; Cuban-influenced classics, on-the-dock vibe, sunsets over the bay.

1200 Crandon Blvd, Bill Baggs Cape Florida State Park
$$$SeafoodWaterfront

Cantina Beach

Miami's only oceanfront coastal-Mexican restaurant, at the Ritz-Carlton. The tequila program runs to 100+ pours.

455 Grand Bay Dr (Ritz-Carlton Key Biscayne)
$$$$MexicanOceanfront

Lightkeepers

The Ritz's main coastal-cuisine restaurant; freshly-caught seafood, an upscale Sunday brunch buffet with unlimited mimosas and Bloody Marys.

455 Grand Bay Dr (Ritz-Carlton Key Biscayne)
$$$$CoastalBrunch

Costa Med Bistro+Wine

Mediterranean since 2003 and consistently the village's highest-reviewed restaurant. Sits in the Galleria.

Galleria, Crandon Blvd
$$$MediterraneanWine

Milanezza Kitchen Bar Market

Italian-Argentine staple with an attached small-format market. Reliable weeknight dinner with kids.

$$ItalianCasual

Novecento

Argentine grill standard with a Key Biscayne outpost; the empanada-and-skirt-steak default for most longtime residents.

$$$ArgentineSteak

Fulano

Newer-arrival modern Latin spot; one of the few additions that has stuck since 2024.

$$$LatinNew

Frequently Asked Questions

Common questions about Key Biscayne

Talk to a Key Biscayne specialist

From oceanfront condos at the Ocean Club, Oceana, and the Ritz-Carlton Residences to interior single-family homes on Mashta and Harbor Drive, the buildings here trade differently. Our agents know the bands, the assessments, and the lines worth waiting for.