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US ZIP Code Profile

ZIP Code 78570
Mercedes, Texas

ZIP code 78570 is in Mercedes, located in Hidalgo County, Texas, within the McAllen-Edinburg-Mission metro area. Its 2020 Census population was 32,950. The estimated median adjusted gross income per tax return is $24,562, and about 1% of filers report $200,000 or more.

2020 Population
32,950
Census ZCTA
County
Hidalgo
FIPS 48215
Median income (est.)
$24,562
IRS SOI 2022 · approx.
Land Area
74.556 mi²
+ 0.873 mi² water

01Location & Geography

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

Primary CityMercedes, TX
CountyHidalgo County (FIPS 48215)
StateTexas (FIPS 48)
Metro Area (MSA)McAllen-Edinburg-Mission, TX Metro Area (32580)
Census Region / DivisionSouth Region · West South Central Division
Coordinates26.174608, -97.91266
Land / Water Area74.556 mi² land · 0.873 mi² water

02Income & Economics

Distribution of the 13,460 individual tax returns filed in 78570 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
50.9%
$25K–$50K
28.4%
$50K–$75K
11.3%
$75K–$100K
4.6%
$100K–$200K
4.2%
$200K+
0.6%
The $200,000+ bracket accounts for 6% of 78570's total adjusted gross income, from 1% of returns — a concentration that drives the gap between the median ($24,562) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income. Estimate is approximate for this ZIP (median falls in the lowest bracket).

03Income Over Time

Year-over-year change in 78570's IRS income metrics, 2020–2022.

Median income (2021→2022)
$24,562
▲ 5.2%
Filers earning $200K+
0.6%
▲ 0.1 pt
Total filers
13,460
▼ 0.1%
GET /zipc/v2/zipcodes/78570/soi?year=… $23K 2020 $23K 2021 $25K 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 78570 ZCTA.

2000
29,339
 
2010
32,525
▲ +10.9%
2020
32,950
▲ +1.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number485820
City AliasesHeidelberg, Mercedes, Relampago, Rio Rico, Thayer

06Frequently Asked Questions

What county is ZIP code 78570 in?

ZIP code 78570 is in Hidalgo County, Texas (county FIPS code 48215).

What city is ZIP code 78570?

The primary USPS city for 78570 is Mercedes, TX.

What metro area (MSA) is 78570 in?

78570 is part of the McAllen-Edinburg-Mission, TX Metro Area (MSA code 32580).

What is the population of ZIP code 78570?

The 2020 Census population of 78570 was 32,950 residents.

What is the median income in ZIP code 78570?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78570 is about $24,562, with around 1% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.