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33037
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  3. ZIP Code 33037
Florida (FL)Monroe CountyKey West-Key Largo

ZIP Code 33037 — Key Largo, FL

Monroe County * Key West-Key Largo metro

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14.8K

Population

$86.5K

Median income

per household

$683K

Home value

12.0%

Poverty rate

What stands out

  • Median household income: $86.5K.
  • Median home value: $683K (top 10% vs US ZIP codes).
  • Poverty rate: 12.0%.

Categories vs U.S.

Economy

5 of 5 metrics better than U.S. benchmarks

Housing stretch: typical home values are about 7.9× the median household income.

Median household income

$86.5K

U.S.

$81K

Per-capita income

$64.9K

U.S.

$45K

Median home value

$683K

U.S.

$333K

Housing stress

Rent-burdened renters (≥30%)

55.1%

U.S.

51.1%

Severely rent-burdened (≥50%)

27.8%

U.S.

25.9%

Affordability Ratios

Rent-to-Income

26.3%

Approaching 30% threshold

Home-Value-to-Income

7.9×

Above typical 3-5x ratio

Income distribution

Share of households by income bracket (ACS).

< $50k
26.8%
$50–100k
29.4%
$100–200k
25.3%
$200k+
18.6%

Health

5 of 6 available metrics better than U.S.

CDC PLACES modeled ZCTA-level estimates (adult prevalence).

Obesity

26.4%

U.S.

33.3%

Diabetes

14.3%

U.S.

12.0%

Current smoking

12.5%

U.S.

13.1%

Connectivity

2 of 3 metrics better than U.S.

Best available speed

1,000Mbps

Gigabit speeds reported

100+ Mbps coverage

96.4%

U.S.

85.3%

Gigabit ready

42.6%

U.S.

8.6%

5G available

40.6%

U.S.

77.4%

Learning

Education metrics come from ACS 5-year estimates for ZIP Code Tabulation Areas (ZCTAs).

Bachelor's degree+ (age 25+)

41.7%

U.S.

35.7%

ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as noise.

School districts

Monroe County School District

Map

ZIP 33037

Key Largo, FL

Population

14.8K

Area

32.9 sq mi

Density

448.9/sq mi

Neighbors

3303433070
More Details

Census Tracts

5 tracts overlap this ZIP. Hover over segments to explore.

73%
13%

Tract 9727

73%

Tract 9704

12.8%

Tract 9705

5.6%

Tract 9706

5.4%

Tract 9800

3.2%

Total tracts: 5Coverage: 100.0%

Representation

U.S. House

ZIP codes can span multiple congressional districts. Overlap percentages are approximate by land area. Verify by address.

100%

FL-28

100%

Districts: 1Coverage: 100.0%

Data freshness

ACS 5-Year
2020–2024
CDC PLACES
2025
Broadband
2020-12
Mobile
2025-11-24
Page Updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

US Census Bureau (ACS 5-year)HUD USPS ZIP crosswalkUS Census TIGER/Line (geometry inputs)US Census TIGER/Line (school districts)US Census Bureau (ZCTA-to-tract relationship, 2020)US Census Bureau (2020 ZCTA-to-congressional-district relationship file, CD119)CDC PLACES (ZCTA)FCC (Form 477 broadband)FCC (Mobile Broadband Data Collection)

Derived statistics

  • ZIP pages use Census ZIP Code Tabulation Areas (ZCTAs), not USPS delivery routes.
  • Population density is computed as population ÷ land area.
  • Overlap percentages (tracts and districts) are derived from map geometry and are approximate.

Data accuracy & methodology

ZIP pages combine 2020–2024 ACS 5-year ZCTA estimates with other public datasets when available (see Sources). Connectivity metrics use FCC coverage data, not ACS. ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as statistical noise rather than precise changes.