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US ZIP Code Profile

ZIP Code 78550
Harlingen, Texas

ZIP code 78550 is in Harlingen, located in Cameron County, Texas, within the Brownsville-Harlingen metro area. Its 2020 Census population was 56,038. The estimated median adjusted gross income per tax return is $32,410, and about 2% of filers report $200,000 or more.

2020 Population
56,038
Census ZCTA
County
Cameron
FIPS 48061
Median income (est.)
$32,410
IRS SOI 2022
Land Area
95.592 mi²
+ 0.964 mi² water

01Location & Geography

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

Primary CityHarlingen, TX
CountyCameron County (FIPS 48061)
StateTexas (FIPS 48)
Metro Area (MSA)Brownsville-Harlingen, TX Metro Area (15180)
Census Region / DivisionSouth Region · West South Central Division
Coordinates26.255524, -97.6675
Land / Water Area95.592 mi² land · 0.964 mi² water

02Income & Economics

Distribution of the 21,320 individual tax returns filed in 78550 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
41.5%
$25K–$50K
28.8%
$50K–$75K
13.5%
$75K–$100K
6.2%
$100K–$200K
8.0%
$200K+
2.1%
The $200,000+ bracket accounts for 19% of 78550's total adjusted gross income, from 2% of returns — a concentration that drives the gap between the median ($32,410) 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 78550's IRS income metrics, 2020–2022.

Median income (2021→2022)
$32,410
▲ 10.7%
Filers earning $200K+
2.1%
▼ 0.0 pt
Total filers
21,320
▼ 0.2%
GET /zipc/v2/zipcodes/78550/soi?year=… $28K 2020 $29K 2021 $32K 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 78550 ZCTA.

2000
51,087
 
2010
53,152
▲ +4.0%
2020
56,038
▲ +5.4%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number483890
City AliasesAdams Gardens, Arroyo, Avondale, Harlingen, Hgn, Kayare, Primera, Stuart Place

06Frequently Asked Questions

What county is ZIP code 78550 in?

ZIP code 78550 is in Cameron County, Texas (county FIPS code 48061).

What city is ZIP code 78550?

The primary USPS city for 78550 is Harlingen, TX.

What metro area (MSA) is 78550 in?

78550 is part of the Brownsville-Harlingen, TX Metro Area (MSA code 15180).

What is the population of ZIP code 78550?

The 2020 Census population of 78550 was 56,038 residents.

What is the median income in ZIP code 78550?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78550 is about $32,410, with around 2% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.