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County ZIP codes · Texas · FIPS 48409

San Patricio County, TX ZIP Codes

San Patricio County, Texas has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 9 residential and 1 for PO boxes or a single organization. 4 of the residential ones extend into a neighboring county. Median household income ranges from $46,486 in 78368 (Mathis) to $83,504 in 78374 (Portland) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of San Patricio County?

78336 · Aransas Pass: $58k78352 · Edroy: –78359 · Gregory: $46k78362 · Ingleside: $71k78368 · Mathis: $47k78370 · Odem: $70k78374 · Portland: $84k78387 · Sinton: $53k78390 · Taft: $78k78368783877839078370783367837478362783597835278336 · Aransas Pass: $58k78352 · Edroy: –78359 · Gregory: $46k78362 · Ingleside: $71k78368 · Mathis: $47k78370 · Odem: $70k78374 · Portland: $84k78387 · Sinton: $53k78390 · Taft: $78k783687838778390783707833678374783627835978336 · Aransas Pass: $58k78352 · Edroy: –78359 · Gregory: $46k78362 · Ingleside: $71k78368 · Mathis: $47k78370 · Odem: $70k78374 · Portland: $84k78387 · Sinton: $53k78390 · Taft: $78k783687838778390783707833678374
The residential ZIP codes of San Patricio County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $53,048 and $71,058.

They carry 9 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 9 residential ZIP codes in San Patricio County

Residential ZIP codes mainly in San Patricio County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
78374 Portland 20,408 1,101 $84k $234k 100%
78336 Aransas Pass 12,424 207 $58k $214k 67%
78362 Ingleside 10,816 592 $71k $191k 100%
78387 Sinton 9,640 56 $53k $166k 79%
78368 Mathis 9,464 46 $47k $95k 70%
78390 Taft 6,013 30 $78k $136k 92%
78370 Odem 5,353 49 $70k $177k 100%
78359 Gregory 2,154 225 $46k $118k 100%
78352 Edroy 54 13 – – 100%

Download the 10 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

4 ZIP codes of San Patricio County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in San Patricio County and in the neighboring counties
ZIPIn San PatricioElsewhere
7833667%Aransas County 30%; Nueces County 3%
7838779%Bee County 21%
7836870%Live Oak County 30%
7839092%Aransas County 8%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in San Patricio County without a residential area (GeoNames postal codes)
ZIPPostal name
78335Aransas Pass

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do San Patricio County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of San Patricio County starts with 783.

Three-digit prefixes of San Patricio County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are San Patricio County's
PrefixSectional centerHereAll codes
783 Corpus Christi, TX (SCF 783) 10 49

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.