Residential delivery area · Florida
ZIP Code 33043: Big Pine Key, FL
ZIP code 33043 is in Big Pine Key, Florida, entirely in Monroe County (Census 2020 ZIP-county file). About 4,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $110,491 (Census Bureau, ACS 2020-2024). By Census place, 61% of its land lies in Big Pine Key (a census-designated place); 39% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Big Pine Key · its only residential ZIP
- County
- Monroe County
- Census places
- Big Pine Key census-designated place
- Micro area
- Key West-Key Largo, FL
- House district
- FL-28 119th Congress
- State
- Florida
- Time zone
- Eastern
- Land area
- 16.6 sq mi · 258 people per sq mi
Where is ZIP code 33043?
33043 centers on 24.670°, -81.261° and covers 16.6 square miles of land plus 83.9 of water. It borders 1 ZIP code: 33042.
The map draws ZIP code areas only. For the streets inside 33043, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 33043 compare with the rest of Monroe County?
| Measure | 33043 | In Monroe County | In FL |
|---|---|---|---|
| People (ACS 2020-2024) | 4,298 | 7th of 11 | 826th of 1,013 |
| Median household income | $111k | not ranked | not ranked |
| Median home value | $638k | 7th of 8 | 83rd of 833 |
33043's median household income is not ranked: its 90% margin of error (±$29,388) is more than a quarter of the figure ($110,491). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 65% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 33043?
The 2020 Census counted 4,661 people in 33043; the ACS, which samples households over 2020-2024, estimates 4,298. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 4,298±617 (90% margin)
- 2020 Census count
- 4,661
- Households
- 1,879
- Median age
- 52.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 33043?
Of the 4,298 people the ACS estimates in 33043, 14.1% are under 18 and 25.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.8%).
- Under 1814.1%
- 18 to 6460.8%
- 65 and older25.0%
- White, not Hispanic85.8%
- Hispanic or Latino8.1%
- Other or two or more4.5%
- Asian, not Hispanic1.2%
- Black, not Hispanic0.4%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 33043 earn?
Median household income is $110,491 (ACS 2020-2024).
- Median household income
- $110,491±$29,388
- Income per person
- $52,573
- Below the poverty line
- 10.6%
- Unemployed (of the labor force)
- 1.8%
- Adults 25+ with a bachelor's degree
- 30.7%
- Adjusted gross income per tax return, 2022
- $94,8292,370 returns; wages 52% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 33043?
FHFA's house price index for 33043, built from repeat sales and appraisals of the same homes, rose 127% from 2015 to 2025 and rose 65% from 2020 to 2025, and moved +1.1% in 2025.
- Median home value (owners' estimate)
- $638,000
- Median gross rent
- $1,724
- Homes owned by their occupants
- 88.4%
- Housing units
- 2,972
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 33043?
195 business establishments had a location in this ZIP code in 2023, 13 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction37
- Other services (except public administration)23
- Professional, scientific, and technical services21
- Retail trade19
- Real estate and rental and leasing16
- Administrative and support and waste management and remediation services16
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 33043?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 33042 | Summerland Key | 6,441 | $103k | 15.2 mi |
| 33051 | Key Colony Beach | 511 | $94k | 15.5 mi (near) |
| 33050 | Marathon | 10,561 | $95k | 18.1 mi (near) |
| 33001 | Long Key | 250 | – | 31.0 mi (near) |
| 33036 | Islamorada | 3,777 | $86k | 38.7 mi (near) |
| 33040 | Key West | 35,429 | $87k | 42.4 mi (near) |
| 33070 | Tavernier | 5,768 | $75k | 51.6 mi (near) |
| 33034 | Homestead | 23,823 | $47k | 63.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.