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US ZIP Code Profile

ZIP Code 78387
Sinton, Texas

ZIP code 78387 is in Sinton, located in San Patricio County, Texas, within the Corpus Christi metro area. Its 2020 Census population was 9,936. The estimated median adjusted gross income per tax return is $37,844, and about 3% of filers report $200,000 or more.

2020 Population
9,936
Census ZCTA
County
San Patricio
FIPS 48409
Median income (est.)
$37,844
IRS SOI 2022
Land Area
214.489 mi²
+ 0.424 mi² water

01Location & Geography

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

Primary CitySinton, 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
Coordinates28.121595, -97.55301
Land / Water Area214.489 mi² land · 0.424 mi² water

02Income & Economics

Distribution of the 4,160 individual tax returns filed in 78387 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
36.5%
$25K–$50K
26.2%
$50K–$75K
14.2%
$75K–$100K
8.4%
$100K–$200K
11.8%
$200K+
2.9%
The $200,000+ bracket accounts for 20% of 78387's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($37,844) 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 78387's IRS income metrics, 2020–2022.

Median income (2021→2022)
$37,844
▲ 7.8%
Filers earning $200K+
2.9%
▲ 0.8 pt
Total filers
4,160
▼ 1.7%
GET /zipc/v2/zipcodes/78387/soi?year=… $34K 2020 $35K 2021 $38K 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 78387 ZCTA.

2000
9,858
 
2010
9,574
▼ -2.9%
2020
9,936
▲ +3.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number488385
City AliasesPapalote, Sinton, Sodville

06Frequently Asked Questions

What county is ZIP code 78387 in?

ZIP code 78387 is in San Patricio County, Texas (county FIPS code 48409).

What city is ZIP code 78387?

The primary USPS city for 78387 is Sinton, TX.

What metro area (MSA) is 78387 in?

78387 is part of the Corpus Christi, TX Metro Area (MSA code 18580).

What is the population of ZIP code 78387?

The 2020 Census population of 78387 was 9,936 residents.

What is the median income in ZIP code 78387?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78387 is about $37,844, 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.