33149 ZIP Code, Key Biscayne, FL

33149 is a ZIP code in Key Biscayne, Florida in Miami-Dade County. It covers 4.7 square miles of land. The closest ZIP codes are 33129, 33109 and 33131. 14,791 people live here in 4,945 households. At about 3,141 people per square mile it has suburban density, and owners and renters are mixed (67% own). Median household income is $181,505, well above the Florida median of $74,568; 46% of households have children under 18.

Quick facts

Key figures

MeasureValue
Residents14,791
Households4,945
Median household income$181,505
Income per person$106,219
Median age42.2
Homeowners66.6%
Median home value$1,575,300
Median rent$3,501
Bachelor's degree or higher77.2%
Average commute (minutes)23.7
Households with kids under 1846.2%
Moved in the past year17.2%
Below the poverty line5.5%
Broadband internet92.6%
Speak a non-English language at home80.4%

Household income

% of householdsValue
<$10K4.1%
$10–15K1.1%
$15–25K4.7%
$25–35K1.3%
$35–50K3.3%
$50–75K7.0%
$75–100K11.0%
$100–150K11.7%
$150–200K7.5%
$200K+48.3%

Age

% of all residentsValue
<1013.9%
10–1919.6%
20–242.7%
25–346.1%
35–4411.7%
45–5419.7%
55–6410.4%
65–748.4%
75+7.3%

Tenure

% of housing unitsValue
Owned, with mortgage21.7%
Owned outright23.6%
Rented22.5%
Vacant32.2%

Type of building

% of housing unitsValue
Detached house18.6%
Townhome3.5%
2–4 units0.8%
5–19 units4.5%
20+ units72.0%
Mobile / other0.6%

Businesses in 33149

695 business establishments with 3,725 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

33149 has 11 USPS carrier routes with 6,671 residential and 436 business mailboxes. Open the EDDM route map.

Carrier routes in 33149

33149 has 11 USPS carrier routes (11 city (C)) with 6,671 residential and 436 business mailboxes. Routes range from 299 homes (C071) to 823 homes (C074); the median route has 561 homes. The Census counted 4,945 households in 33149 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4993
500–7493
750–9995
1,000–1,4990
1,500+0

Best routes in 33149 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route C080 — USPS business mailboxes 185, 792 homes
  2. Route C081 — USPS business mailboxes 117, 363 homes
  3. Route C089 — USPS business mailboxes 61, 423 homes
  4. Route C079 — USPS business mailboxes 29, 561 homes
  5. Route C076 — USPS business mailboxes 12, 796 homes

Select these 5 routes on the route map

Every carrier route in 33149

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C071City2999$200,001+———
C073City5483$200,001+———
C074City8235$200,001+———
C075City5154$200,001+———
C076City79612$141,643———
C077City7822$200,001+———
C079City56129$200,001+———
C080City792185$200,001+———
C081City363117$183,188———
C085City7699$78,668———
C089City42361$200,001+———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 33149 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

Areas that include 33149

Where it ranks

Mail every home in 33149

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

Miami EDDM mailing

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 33149, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 33149 in?
33149 is a Key Biscayne, FL mailing address. By land area, 27% lies inside Miami and 26% lies inside Key Biscayne; the rest is outside any Census-defined city or community.
What county is 33149 in?
33149 is in Miami-Dade County.
What is the population of 33149?
About 14,791 people (±28), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 14,847.
What is the median household income in 33149?
$181,505 (±$39,472), compared with $74,568 for Florida as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 33149?
11 USPS carrier routes with 6,671 residential and 436 business mailboxes (7,106 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 33149?
The closest, measured center to center: 33129 (3.5 mi, Miami), 33109 (3.8 mi, Fisher Island), 33131 (3.8 mi, Miami), 33132 (4.3 mi, Miami), 33130 (4.5 mi, Miami) and 33133 (4.5 mi, Miami).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.