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US ZIP Code Profile

ZIP Code 33149
Key Biscayne, Florida

ZIP code 33149 is in Key Biscayne, located in Miami-Dade County, Florida, within the Miami-Fort Lauderdale-West Palm Beach metro area. Its 2020 Census population was 14,847. The estimated median adjusted gross income per tax return is $132,828, and about 40% of filers report $200,000 or more.

2020 Population
14,847
Census ZCTA
County
Miami-Dade
FIPS 12086
Median income (est.)
$132,828
IRS SOI 2022
Land Area
4.709 mi²
+ 9.382 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityKey Biscayne, FL
CountyMiami-Dade County (FIPS 12086)
StateFlorida (FIPS 12)
Metro Area (MSA)Miami-Fort Lauderdale-West Palm Beach, FL Metro Area (33100)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates25.714413, -80.16359
Land / Water Area4.709 mi² land · 9.382 mi² water

02Income & Economics

Distribution of the 6,390 individual tax returns filed in 33149 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
19.9%
$25K–$50K
10.6%
$50K–$75K
8.3%
$75K–$100K
6.1%
$100K–$200K
15.5%
$200K+
39.6%
The $200,000+ bracket accounts for 92% of 33149's total adjusted gross income, from 40% of returns — a concentration that drives the gap between the median ($132,828) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 33149's IRS income metrics, 2020–2022.

Median income (2021→2022)
$132,828
▲ 16.2%
Filers earning $200K+
39.6%
▲ 3.1 pt
Total filers
6,390
▲ 19.7%
GET /zipc/v2/zipcodes/33149/soi?year=… $97K 2020 $114K 2021 $133K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 33149 ZCTA.

2000
10,513
 
2010
12,389
▲ +17.8%
2020
14,847
▲ +19.8%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 33149. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 33149

Key Biscayne and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 33149 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypeBranch
Carrier Route SortB
USPS Finance Number115850
City AliasesKey Biscayne, Miami

07Frequently Asked Questions

What county is ZIP code 33149 in?

ZIP code 33149 is in Miami-Dade County, Florida (county FIPS code 12086).

What city is ZIP code 33149?

The primary USPS city for 33149 is Key Biscayne, FL.

What metro area (MSA) is 33149 in?

33149 is part of the Miami-Fort Lauderdale-West Palm Beach, FL Metro Area (MSA code 33100).

What is the population of ZIP code 33149?

The 2020 Census population of 33149 was 14,847 residents.

What is the median income in ZIP code 33149?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 33149 is about $132,828, with around 40% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.