Get API Key →
US ZIP Code Profile

ZIP Code 33957
Sanibel, Florida

ZIP code 33957 is in Sanibel, located in Lee County, Florida, within the Cape Coral-Fort Myers metro area. Its 2020 Census population was 6,382. The estimated median adjusted gross income per tax return is $167,241, and about 43% of filers report $200,000 or more.

2020 Population
6,382
Census ZCTA
County
Lee
FIPS 12071
Median income (est.)
$167,241
IRS SOI 2022
Land Area
16.225 mi²
+ 18.974 mi² water

01Location & Geography

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

Primary CitySanibel, FL
CountyLee County (FIPS 12071)
StateFlorida (FIPS 12)
Metro Area (MSA)Cape Coral-Fort Myers, FL Metro Area (15980)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates26.46169, -82.10039
Land / Water Area16.225 mi² land · 18.974 mi² water

02Income & Economics

Distribution of the 2,600 individual tax returns filed in 33957 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
12.7%
$25K–$50K
8.8%
$50K–$75K
7.3%
$75K–$100K
6.2%
$100K–$200K
22.3%
$200K+
42.7%
The $200,000+ bracket accounts for 92% of 33957's total adjusted gross income, from 43% of returns — a concentration that drives the gap between the median ($167,241) 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 33957's IRS income metrics, 2020–2022.

Median income (2021→2022)
$167,241
▲ 2.8%
Filers earning $200K+
42.7%
▲ 0.4 pt
Total filers
2,600
▼ 2.6%
GET /zipc/v2/zipcodes/33957/soi?year=… $125K 2020 $163K 2021 $167K 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 33957 ZCTA.

2000
6,104
 
2010
6,469
▲ +6.0%
2020
6,382
▼ -1.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number118370
City AliasesSanibel

06Frequently Asked Questions

What county is ZIP code 33957 in?

ZIP code 33957 is in Lee County, Florida (county FIPS code 12071).

What city is ZIP code 33957?

The primary USPS city for 33957 is Sanibel, FL.

What metro area (MSA) is 33957 in?

33957 is part of the Cape Coral-Fort Myers, FL Metro Area (MSA code 15980).

What is the population of ZIP code 33957?

The 2020 Census population of 33957 was 6,382 residents.

What is the median income in ZIP code 33957?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 33957 is about $167,241, with around 43% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.