PlainZIP

Key West, FL · standard

ZIP Code 33040

Monroe County, Florida - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

32,891
686/sq mi
$86,586
Median income
$819,400
Median home value
38.2%
Bachelor's or higher

The verdict

Key West pairs an above-median household income with top-decile home values, in a low-density, mixed-tenure area.

Top 30%
household income, US ZIPs
Top 4%
home value, US ZIPs
686
people per sq mi
50%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 33040 against every reporting US ZIP.

ZIP code 33040 is classified by USPS as a standard delivery area and covers roughly 47.9 square miles in Key West, Monroe County, Florida. The area is home to 32,891 residents, producing a population density of 686 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 33040 against Florida and the nation.

On the economic side, the median household income for ZIP 33040 sits at $86,586 (12% above the Florida average), while per-capita income is $57,545. The poverty rate stands at 10.0% and the unemployment rate at 2.6%. On housing, the median home value is $819,400 (118% above the state average) with median rent at $2,167 per month, and 50.2% of occupied units are owner-occupied, a direct signal of whether 33040 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 38.2% of adults hold a bachelor's degree or higher, the median age is 43.8, and the average commute is 16 minutes. Use the benchmarks above to see where 33040 sits relative to Florida and the national baseline rather than viewing the numbers in isolation. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →

Top industries in ZIP 33040

Top 5 sectors by establishment count

Which industries have the most business establishments in ZIP 33040.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 33040, Key West, FL · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.

Quick Facts

32,891

Population

47.9

Area (sq mi)

686

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 33040?

43.8

Median Age

51.8%

Male

48.2%

Female

23.1%

Foreign-Born

White 61.4%
African American 14.4%
Asian 2.0%
American Indian or Alaska Native 0.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 16.9%
Hispanic or Latino 25.4%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$86,586

Median Household Income

+12% vs state

$57,545

Per Capita Income

10.0%

Poverty Rate

2.6%

Unemployment Rate

15.8 min

Mean Commute Time

How ZIP 33040 ranks nationally

Household income vs. every US ZIP code

Median household income — the full national distribution, with this ZIP marked

$86,586 Top 30% higher than 70% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau — ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.5%
Bachelor's Degree or Higher 38.2%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

19,404

Total Housing Units

14,574

Occupied Units

4,830

Vacant Units

2.35

Avg Household Size

Occupancy Type

Owner 50.2%
Renter 49.8%

$819,400

Median Home Value

+118% vs state

$2,167

Median Rent

1974

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

-2.0%

YoY Change (2024)

338

HPI Index (2000 = 100)

+238%

Total Change Since 2000

Home values in ZIP 33040 have decreased 2.0% over the past year (2024). Since 2000, this ZIP has seen +238% cumulative appreciation.

Year Annual Change HPI Index
2020 +2.7% 236
2021 +12.1% 265
2022 +19.6% 316
2023 +9.0% 345
2024 -2.0% 338

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 1,787 business establishments in ZIP 33040, employing approximately 17,382 people with a combined annual payroll of $856,803,000.

1,787

Businesses

17,382

Employees

$856.8M

Annual Payroll

16

Industry Sectors

Industry Establishments % of Total
Accommodation and food services 312 17.5%
Retail trade 311 17.4%
Professional, scientific, and technical services 185 10.3%
Real estate and rental and leasing 175 9.8%
Construction 136 7.6%
Other services (except public administration) 127 7.1%
Health care and social assistance 112 6.3%
Administrative and support and waste management and remediation services 100 5.6%
Transportation and warehousing 84 4.7%
Arts, entertainment, and recreation 81 4.5%
Finance and insurance 49 2.7%
Wholesale trade 36 2.0%
Manufacturing 31 1.7%
Information 18 1.0%
Educational services 17 0.9%
Agriculture, forestry, fishing and hunting 9 0.5%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

More ZIP Codes in Monroe County

33037 standard
Key Largo, FL
Pop: 11,612
33050 standard
Marathon, FL
Pop: 8,922
33042 standard
Summerland Key, FL
Pop: 5,829
33070 standard
Tavernier, FL
Pop: 5,344
33043 standard
Big Pine Key, FL
Pop: 4,313
33036 standard
Islamorada, FL
Pop: 3,035

Related Areas

Monroe County Key West, FL Florida

Frequently Asked Questions

What county is ZIP code 33040 in? ▼
ZIP code 33040 (Key West) is located in Monroe County, Florida. Monroe County contains multiple ZIP codes, see the full list at /counties/monroe-fl.
What is the population of ZIP code 33040? ▼
ZIP code 33040 in Key West, FL has a population of 32,891 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 33040? ▼
The median household income in ZIP 33040 is $86,586, which is 13% above the national average of $76,288.
What is the average home value in ZIP 33040? ▼
The median home value in ZIP 33040 is $819,400, which is 195% above the national average of $278,155.
What is the demographic makeup of ZIP 33040? ▼
The largest racial group in ZIP 33040 is White at 61.4%. Hispanic or Latino residents make up 25.4% of the population.
How many businesses are in ZIP code 33040? ▼
ZIP code 33040 has 1,787 business establishments employing approximately 17,382 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 33040? ▼
The top industries by establishment count in ZIP 33040 are: Accommodation and food services (312), Retail trade (311), Professional, scientific, and technical services (185). There are 16 industry sectors represented in total.
How have home values changed in ZIP code 33040? ▼
According to the FHFA House Price Index, home values in ZIP 33040 decreased by 2.0% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 238%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 33040? ▼
In ZIP code 33040, 66.5% of residents aged 25+ have a high school diploma or higher, and 38.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 33040? ▼
The mean commute time for workers in ZIP code 33040 is 15.8 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 33040? ▼
In ZIP code 33040, approximately 50.2% of occupied housing units are owner-occupied and 49.8% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 33040? ▼
The poverty rate in ZIP code 33040 is 10.0% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

ZIP Code Research Guides

Reading Census Demographics
How to interpret population, income, and education data from the Census Bureau.
Understanding ZIP Code Data
What ZIP codes are, how ZCTAs differ, and what the data reveals.
Best ZIP Codes for Families
Key factors to evaluate when choosing a family-friendly neighborhood.
ZIP Codes for Relocation
Data-driven tips for evaluating ZIP codes before a move.

Official Data Resources for Key West, FL

Verify and explore additional data for this area using these official government sources.

U.S. Census Bureau
Official demographic, economic, and housing data from the American Community Survey.
HUD Fair Market Rents
Department of Housing and Urban Development rental cost estimates by metropolitan area.
FBI Uniform Crime Reports
Official crime statistics compiled from law enforcement agencies nationwide.
FHFA House Price Index
Federal Housing Finance Agency home value trends based on repeat sales and appraisals.

Read our methodology to see how this data is sourced, computed, and verified.