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County ZIP codes · Texas · FIPS 48283

La Salle County, TX ZIP Codes

La Salle County, Texas has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones lie mainly in La Salle County and 2 mainly in a neighboring county; 4 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of La Salle County?

78001 · Artesia Wells: –78014 · Cotulla: $66k78017 · Dilley: $60k78019 · Encinal: $51k78021 · Fowlerton: –780147801978017780217800178001 · Artesia Wells: –78014 · Cotulla: $66k78017 · Dilley: $60k78019 · Encinal: $51k78021 · Fowlerton: –780147801978017780217800178001 · Artesia Wells: –78014 · Cotulla: $66k78017 · Dilley: $60k78019 · Encinal: $51k78021 · Fowlerton: –7801478019780177802178001
The residential ZIP codes of La Salle 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).

All 5 residential ZIP codes in La Salle County

3 ZIP codes lie mainly in La Salle County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in La Salle County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
78014 Cotulla 5,002 6 $66k $100k 98%
78021 Fowlerton 165 1 – – 64%
78001 Artesia Wells no residents 0 – – 100%

Partly in La Salle County

Residential ZIP codes mainly in another county that reach at least 1% into La Salle County, by their share here
In this county
78019 Encinal 1,836 2 $51k $82k 16%
78017 Dilley 5,551 14 $60k $103k 12%

Download the 5 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 La Salle County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in La Salle County and in the neighboring counties
ZIPIn La SalleElsewhere
7801712%Frio County88%
7801498%Dimmit County2%
7801916%Webb County84%
7802164%McMullen County36%

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

Which first three digits do La Salle 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 La Salle County starts with 780.

Three-digit prefixes of La Salle 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 La Salle County's
PrefixSectional centerHereAll codes
780San Antonio, TX (SCF 780)559

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