Zip Code 33040
Key West, Florida — Monroe County
📍 ZIP code 33040 is in Key West, Monroe County, Florida.
ZIP code 33040 is located in Key West, Monroe County, Florida. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 36,091. The area code for ZIP code 33040 is 305.
Quick Answer
Zip code 33040 is in Key West, Florida (Monroe County). It has a population of 36,091, median household income of $79,038, and median home value of $766,400.
Population
36,091
Income
$79,038
Home Value
$766,400
Climate
90°F / 63°F
About Zip Code 33040
Zip code 33040 is located in Key West, Florida, within Monroe County. Home to approximately 36,091 residents, this area sits at an elevation of 0 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 305.
The median household income is $79,038 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $766,400, and the cost of living index is 207 (107% above the national average of 100).
Summers average a high of 90°F while winters drop to 63°F. The area receives about 46 in of rain annually. The zip code covers 18.5 square miles of land area and 127.1 square miles of water.
Key Statistics
36,091
$79,038
$766,400
Eastern (EST/EDT)
305
0 ft
18.5 sq mi
44.4
19,001
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Compare With Nearby Zip Codes
Cost of Living
100 = National Average. Key West's cost of living is 107% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
9.7x
Demographics
Zip code 33040 has a population of 36,091 people with a median age of 44.4. There are 19,001 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Key West (33040) population trend from 2010 to 2024
↑ 34.9%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
90°F
63°F
46 in
0 in
Key West experiences hot summers with average highs around 90°F. Winters are mild with lows averaging 63°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$766,400
Median Household Income
$79,038
With 19,001 housing units across 18.5 square miles, 33040 has a housing density of 1,027 units per square mile. The home price-to-income ratio is 9.7x.
Location & Geography
Latitude
24.5609°
Longitude
-81.8895°
Land Area
18.5 sq mi
Water Area
127.1 sq mi
Nearby Zip Codes
Zip codes closest to 33040 (Key West, FL) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 33040's $79,038. A way to compare Key West to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 33040 (Key West, FL). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Key West, Florida?
Key West, Florida uses zip code 33040.
What county is zip code 33040 in?
Zip code 33040 is located in Monroe County, Florida.
What is the population of zip code 33040?
The population of zip code 33040 is 36,091 with a median age of 44.4.
Is 33040 in Key West, Florida?
Yes, zip code 33040 is in Key West, Monroe County, Florida. The area code is 305.
Frequently Asked Questions
What city is zip code 33040 in?
Zip code 33040 is in Key West, Florida. It is part of Monroe County and uses the Eastern (EST/EDT) timezone.
What is zip code 33040?
Zip code 33040 is a U.S. postal code in Key West, Florida (Monroe County). It has a population of 36,091 and covers 18.5 square miles.
What is the population of zip code 33040?
The population of zip code 33040 (Key West, FL) is 36,091 with a median age of 44.4. There are approximately 19,001 housing units in this area.
What is the median income in zip code 33040?
The median household income in zip code 33040 (Key West, FL) is $79,038 per year. The cost of living index is 207 (100 = national average).
What is the average home price in zip code 33040?
The median home value in zip code 33040 (Key West, FL) is $766,400. The cost of living index is 207 compared to the national average of 100.
What county is zip code 33040 in?
Zip code 33040 is located in Monroe County, Florida. The primary city is Key West.
What is the area code for zip code 33040?
Zip code 33040 in Key West, FL uses area code 305. It is located in the Eastern (EST/EDT) timezone.
Is zip code 33040 a good place to live?
Zip code 33040 (Key West, FL) has a cost of living index of 207 (100 = national average), a median household income of $79,038, and median home values of $766,400. The median age is 44.4. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 33040?
The cost of living index for zip code 33040 (Key West, FL) is 207, where 100 represents the national average. This area is above the national average. Median home value: $766,400.
What schools serve zip code 33040?
Zip code 33040 in Key West, Florida is served by the local school district of Monroe County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.