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US ZIP Code Profile

ZIP Code 34990
Palm City, Florida

ZIP code 34990 is in Palm City, located in Martin County, Florida, within the Port St. Lucie metro area. Its 2020 Census population was 31,160. The estimated median adjusted gross income per tax return is $86,760, and about 21% of filers report $200,000 or more.

2020 Population
31,160
Census ZCTA
County
Martin
FIPS 12085
Median income (est.)
$86,760
IRS SOI 2022
Land Area
92.506 mi²
+ 5.387 mi² water

01Location & Geography

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

Primary CityPalm City, FL
CountyMartin County (FIPS 12085)
StateFlorida (FIPS 12)
Metro Area (MSA)Port St. Lucie, FL Metro Area (38940)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates27.135456, -80.34803
Land / Water Area92.506 mi² land · 5.387 mi² water

02Income & Economics

Distribution of the 16,230 individual tax returns filed in 34990 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
20.2%
$25K–$50K
14.1%
$50K–$75K
11.3%
$75K–$100K
9.4%
$100K–$200K
23.8%
$200K+
21.3%
The $200,000+ bracket accounts for 72% of 34990's total adjusted gross income, from 21% of returns — a concentration that drives the gap between the median ($86,760) 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 34990's IRS income metrics, 2020–2022.

Median income (2021→2022)
$86,760
▲ 6.8%
Filers earning $200K+
21.3%
▲ 1.3 pt
Total filers
16,230
▲ 3.8%
GET /zipc/v2/zipcodes/34990/soi?year=… $72K 2020 $81K 2021 $87K 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 34990 ZCTA.

2000
23,762
 
2010
27,707
▲ +16.6%
2020
31,160
▲ +12.5%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number117185
City AliasesPalm City

06Frequently Asked Questions

What county is ZIP code 34990 in?

ZIP code 34990 is in Martin County, Florida (county FIPS code 12085).

What city is ZIP code 34990?

The primary USPS city for 34990 is Palm City, FL.

What metro area (MSA) is 34990 in?

34990 is part of the Port St. Lucie, FL Metro Area (MSA code 38940).

What is the population of ZIP code 34990?

The 2020 Census population of 34990 was 31,160 residents.

What is the median income in ZIP code 34990?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 34990 is about $86,760, with around 21% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.