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US ZIP Code Profile

ZIP Code 78373
Port Aransas, Texas

ZIP code 78373 is in Port Aransas, located in Nueces County, Texas, within the Corpus Christi metro area. Its 2020 Census population was 3,134. The estimated median adjusted gross income per tax return is $56,731, and about 15% of filers report $200,000 or more.

2020 Population
3,134
Census ZCTA
County
Nueces
FIPS 48355
Median income (est.)
$56,731
IRS SOI 2022
Land Area
17.2 mi²
+ 19.976 mi² water

01Location & Geography

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

Primary CityPort Aransas, TX
CountyNueces County (FIPS 48355)
StateTexas (FIPS 48)
Metro Area (MSA)Corpus Christi, TX Metro Area (18580)
Census Region / DivisionSouth Region · West South Central Division
Coordinates27.778915, -97.113625
Land / Water Area17.2 mi² land · 19.976 mi² water

02Income & Economics

Distribution of the 1,900 individual tax returns filed in 78373 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
28.4%
$25K–$50K
17.9%
$50K–$75K
13.7%
$75K–$100K
8.9%
$100K–$200K
16.3%
$200K+
14.7%
The $200,000+ bracket accounts for 71% of 78373's total adjusted gross income, from 15% of returns — a concentration that drives the gap between the median ($56,731) 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 78373's IRS income metrics, 2020–2022.

Median income (2021→2022)
$56,731
▲ 0.9%
Filers earning $200K+
14.7%
▼ 0.3 pt
Total filers
1,900
▲ 5.6%
GET /zipc/v2/zipcodes/78373/soi?year=… $48K 2020 $56K 2021 $57K 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 78373 ZCTA.

2000
3,457
 
2010
3,585
▲ +3.7%
2020
3,134
▼ -12.6%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number487190
City AliasesPort Aransas

06Frequently Asked Questions

What county is ZIP code 78373 in?

ZIP code 78373 is in Nueces County, Texas (county FIPS code 48355).

What city is ZIP code 78373?

The primary USPS city for 78373 is Port Aransas, TX.

What metro area (MSA) is 78373 in?

78373 is part of the Corpus Christi, TX Metro Area (MSA code 18580).

What is the population of ZIP code 78373?

The 2020 Census population of 78373 was 3,134 residents.

What is the median income in ZIP code 78373?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78373 is about $56,731, with around 15% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.