PlainZIP

Key Biscayne, FL

Single-footprint Census roll-up for Key Biscayne, FL: 1 USPS ZIP, population 12,389. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet KEY-BISCAYNE-FL · Key Biscayne, FL 1 ZIPs · 12,389 pop · #369/25278 · Miami-Dade County

INC-TOP · RANK-TOP · ABOVE-PEER · BOOK-ONE · OWN-MID · POP-TOWN · SPREAD-UNK · HOME-TOP

  • INC-TOP $181,505
  • RANK-TOP #369/25278
  • ABOVE-PEER over Miami Beach
  • BOOK-ONE 1 ZIP
  • OWN-MID 67% owners
  • POP-TOWN 12,389
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $1,575,300

Nearest income peer: Miami Beach, FL ( $64,473 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Key Biscayne

Lowest/highest poles plus county-sharing cities nearest Key Biscayne on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Key Biscayne, FL sits among US cities with a top-decile household income, on a town-scale population base, across a single-ZIP footprint.

Top 1%
household income vs 25,278 US cities
12,389
city population (Census)
1
USPS ZIP codes covered
$181,505
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $181,505 and home value $1,575,300 should be read as near-neighborhood numbers ; bachelor's attainment averages 77.2%.

Owner-occupancy sits in a mixed band (66.6%) - check the ZIP page's tenure split before treating Key Biscayne as a pure owner town.

Within Florida, Belleair Beach is the closest lower-income city by average ZIP household income. Its 1 ZIP footprint is the immediate statewide comparison for Key Biscayne.

Population concentration

Key Biscayne's single ZIP 33149 carries the town

Key Biscayne is published as a single USPS ZIP. Code 33149 is the entire residential footprint (12,389 ACS residents), so the city page and the ZIP page tell the same household story, open that ZIP for income, tenure, and commute detail.

Census ZBP business roll-up

Dense ZBP book packed into Key Biscayne's one ZIP

Citywide ZBP: 695 establishments, 3,725 employees , annual payroll $223,850k (~56 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 33149 (695 units) ; leading NAICS Professional, scientific, and technical services (170) · also Real estate and rental and leasing · Other services (except public administration) .

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ZIP Codes in Key Biscayne, FL

These ZIP codes sit in Miami-Dade County, which covers 80 ZIP codes in all; 1 of them fall in Key Biscayne. See the Miami-Dade County roll-up →

No other city sharing Miami-Dade County reports a higher average ZIP median income than Key Biscayne. Miami, Hialeah and Homestead sit below it, so a household comparing this county on income alone starts here. Opa Locka marks the far end of that range at $53,998, 70% below Key Biscayne.

ZIP Code Population Median income Establishments Density
33149 12,389 $181,505 695 1,016
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Key Biscayne roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Key Biscayne, .