ZIP code · Key Biscayne · Florida · United States

ZIP code 33149 — Key Biscayne

ZIP code 33149 serves Key Biscayne, Florida.

Postal code
33149
Single source Value from one source, not cross-checked.
City
Key Biscayne
County
Miami-Dade FIPS 12086
State
Florida
Country
United States
Coordinates
25.6921, -80.1625 — precision precise (locality)
View on OpenStreetMap
Population
14,628 (ZCTA, ACS 5-year)
Population density
3,105 / sq mi
Land area
4.7 sq mi (12.2 km²) (ZCTA, ACS 5-year)
Median household income
$171,982
Per-capita income
$97,039
Median age
43.2
Households
5,003
Housing units
7,514
Median home value
$1,231,500
Median gross rent
$3,500+ / month
Congressional district
FL-27 (119th Congress)
USDA hardiness zone
11a (40 to 45 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area codes
786, 305, 645 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Aug (avg high 91°F), coldest Jan (avg low 63°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F787981848790919190878380
Avg low °F636567727578797979767166
Precip in2.42.02.43.25.77.45.67.07.56.33.52.2

NOAA 1991–2020 climate normals from the nearest station: CAPE FLORIDA (1.4 mi) · NOAA NCEI

Places in ZIP 33149

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page