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ZIP codes in Dallas County

170 ZIPs touch Dallas County, Texas. The blue dashed line is the county border; orange ZIPs reach into it.

170

ZIP codes

24

cross the county line

3,168,349

people in these ZIPs

254

counties in TX

Most people

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Dallas County ZIP list

More counties in Texas

All 254 counties in Texas

Questions people actually ask

How many ZIP codes are in Dallas County, Texas?

170 ZIP codes reach into Dallas County, including 75 PO Box or single-address ZIPs placed by the town they serve. 24 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Dallas County has the most people?

75052 (Grand Prairie) has about 97,278 residents, the most of any ZIP touching Dallas County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Dallas 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 Dallas 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