Key Colony Beach is a city in Monroe County, Florida, home to about 511 people across 0.4 square miles. Its ZIP code is 33051.
Homes sold for a median of $663 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Key Colony Beach. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Key Colony Beach’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Miami International Airport (MIA)87 miles away |
|---|---|
| Closer regional airport | Key West International Airport (EYW)48 miles away |
| Nearest city of 250,000+ | Miami, FL89 miles away |
Straight-line distances from the center of Key Colony Beach; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Key Colony Beach had 790 residents in the 2020 census, up 0% since 2000.
It’s the 852nd largest of 954 towns in Florida by population.
Monroe County grew from 18,006 residents in 1900 to 82,874 in 2020.
Monroe County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 92°F in summer, and winter lows average 64°F. About 39.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Marathon Ap, FL weather station (2 miles away).
37,134 jobs at 4,154 businesses in Monroe County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (1 nearby)
Grocery stores
Pharmacies
Libraries
Museums
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.