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US ZIP Code Profile

ZIP Code 34120
Naples, Florida

ZIP code 34120 is in Naples, located in Collier County, Florida, within the Naples-Immokalee-Marco Island metro area. Its 2020 Census population was 41,026. The estimated median adjusted gross income per tax return is $57,690, and about 11% of filers report $200,000 or more.

2020 Population
41,026
Census ZCTA
County
Collier
FIPS 12021
Median income (est.)
$57,690
IRS SOI 2022
Land Area
149.821 mi²
+ 5.228 mi² water

01Location & Geography

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

Primary CityNaples, FL
CountyCollier County (FIPS 12021)
StateFlorida (FIPS 12)
Metro Area (MSA)Naples-Immokalee-Marco Island, FL Metro Area (34940)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates26.326101, -81.57009
Land / Water Area149.821 mi² land · 5.228 mi² water

02Income & Economics

Distribution of the 24,770 individual tax returns filed in 34120 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
23.7%
$25K–$50K
21.9%
$50K–$75K
14.4%
$75K–$100K
10.0%
$100K–$200K
19.3%
$200K+
10.8%
The $200,000+ bracket accounts for 50% of 34120's total adjusted gross income, from 11% of returns — a concentration that drives the gap between the median ($57,690) 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 34120's IRS income metrics, 2020–2022.

Median income (2021→2022)
$57,690
▲ 7.7%
Filers earning $200K+
10.8%
▲ 1.0 pt
Total filers
24,770
▲ 9.7%
GET /zipc/v2/zipcodes/34120/soi?year=… $48K 2020 $54K 2021 $58K 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 34120 ZCTA.

2000
12,062
 
2010
26,147
▲ +116.8%
2020
41,026
▲ +56.9%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number116270
City AliasesNaples

06Frequently Asked Questions

What county is ZIP code 34120 in?

ZIP code 34120 is in Collier County, Florida (county FIPS code 12021).

What city is ZIP code 34120?

The primary USPS city for 34120 is Naples, FL.

What metro area (MSA) is 34120 in?

34120 is part of the Naples-Immokalee-Marco Island, FL Metro Area (MSA code 34940).

What is the population of ZIP code 34120?

The 2020 Census population of 34120 was 41,026 residents.

What is the median income in ZIP code 34120?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 34120 is about $57,690, with around 11% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.