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US ZIP Code Profile

ZIP Code 78368
Mathis, Texas

ZIP code 78368 is in Mathis, located in San Patricio County, Texas, within the Corpus Christi metro area. Its 2020 Census population was 8,726. The estimated median adjusted gross income per tax return is $35,459, and about 3% of filers report $200,000 or more.

2020 Population
8,726
Census ZCTA
County
San Patricio
FIPS 48409
Median income (est.)
$35,459
IRS SOI 2022
Land Area
216.347 mi²
+ 21.897 mi² water

01Location & Geography

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

Primary CityMathis, TX
CountySan Patricio County (FIPS 48409)
StateTexas (FIPS 48)
Metro Area (MSA)Corpus Christi, TX Metro Area (18580)
Census Region / DivisionSouth Region · West South Central Division
Coordinates28.103445, -97.80818
Land / Water Area216.347 mi² land · 21.897 mi² water

02Income & Economics

Distribution of the 3,840 individual tax returns filed in 78368 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
39.3%
$25K–$50K
25.5%
$50K–$75K
13.5%
$75K–$100K
8.3%
$100K–$200K
10.7%
$200K+
2.6%
The $200,000+ bracket accounts for 21% of 78368's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($35,459) 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 78368's IRS income metrics, 2020–2022.

Median income (2021→2022)
$35,459
▲ 10.8%
Filers earning $200K+
2.6%
▲ 0.6 pt
Total filers
3,840
▼ 3.0%
GET /zipc/v2/zipcodes/78368/soi?year=… $32K 2020 $32K 2021 $35K 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 78368 ZCTA.

2000
10,224
 
2010
9,227
▼ -9.8%
2020
8,726
▼ -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 Number485725
City AliasesArgenta, Hubert, Mathis, San Patricio, Swinney Switch, Lake City, Swinney Swtch

06Frequently Asked Questions

What county is ZIP code 78368 in?

ZIP code 78368 is in San Patricio County, Texas (county FIPS code 48409).

What city is ZIP code 78368?

The primary USPS city for 78368 is Mathis, TX.

What metro area (MSA) is 78368 in?

78368 is part of the Corpus Christi, TX Metro Area (MSA code 18580).

What is the population of ZIP code 78368?

The 2020 Census population of 78368 was 8,726 residents.

What is the median income in ZIP code 78368?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78368 is about $35,459, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.