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US ZIP Code Profile

ZIP Code 33043
Big Pine Key, Florida

ZIP code 33043 is in Big Pine Key, located in Monroe County, Florida, within the Key West metro area. Its 2020 Census population was 4,661. The estimated median adjusted gross income per tax return is $59,688, and about 9% of filers report $200,000 or more.

2020 Population
4,661
Census ZCTA
County
Monroe
FIPS 12087
Median income (est.)
$59,688
IRS SOI 2022
Land Area
14.835 mi²
+ 67.152 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityBig Pine Key, FL
CountyMonroe County (FIPS 12087)
StateFlorida (FIPS 12)
Metro Area (MSA)Key West, FL Micro Area (28580)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates24.72047, -81.353226
Land / Water Area14.835 mi² land · 67.152 mi² water

02Income & Economics

Distribution of the 2,370 individual tax returns filed in 33043 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
21.5%
$25K–$50K
21.9%
$50K–$75K
16.9%
$75K–$100K
9.7%
$100K–$200K
21.1%
$200K+
8.9%
The $200,000+ bracket accounts for 38% of 33043's total adjusted gross income, from 9% of returns — a concentration that drives the gap between the median ($59,688) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 33043's IRS income metrics, 2020–2022.

Median income (2021→2022)
$59,688
▲ 7.1%
Filers earning $200K+
8.9%
▲ 1.1 pt
Total filers
2,370
▲ 1.7%
GET /zipc/v2/zipcodes/33043/soi?year=… $47K 2020 $56K 2021 $60K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 33043 ZCTA.

2000
5,159
 
2010
4,313
▼ -16.4%
2020
4,661
▲ +8.1%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypeBranch
Carrier Route SortD
USPS Finance Number118780
City AliasesBig Pine Key, No Name Key, Summerland Key, Summrlnd Key

06Frequently Asked Questions

What county is ZIP code 33043 in?

ZIP code 33043 is in Monroe County, Florida (county FIPS code 12087).

What city is ZIP code 33043?

The primary USPS city for 33043 is Big Pine Key, FL.

What metro area (MSA) is 33043 in?

33043 is part of the Key West, FL Micro Area (MSA code 28580).

What is the population of ZIP code 33043?

The 2020 Census population of 33043 was 4,661 residents.

What is the median income in ZIP code 33043?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 33043 is about $59,688, with around 9% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.