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ZIP codes in La Salle County

5 ZIPs touch La Salle County, Texas. The blue dashed line is the county border; orange ZIPs reach into it.

5

ZIP codes

4

cross the county line

12,554

people in these ZIPs

254

counties in TX

Most people

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La Salle County ZIP list

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Questions people actually ask

How many ZIP codes are in La Salle County, Texas?

5 ZIP codes reach into La Salle County. 4 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in La Salle County has the most people?

78017 (Dilley) has about 5,551 residents, the most of any ZIP touching La Salle County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in La Salle County and another county?

Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in La Salle County. For one address, pin the exact spot on the ZIP finder to see its county.

Where does this list come from?

ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.

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Updated 2026-11-10 · Where the data comes from