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What county is ZIP code 75657 in?

Updated · Data: U.S. Census Bureau

ZIP code 75657 (Jefferson, TX) is mostly in Marion County (87.3% of its land), with parts in Cass County and Harrison County.

Which counties is ZIP 75657 in?

CountyShare of land areaChart
Marion County87.3%
Cass County7.6%
Harrison County5.1%

About 6,842 people live in this ZIP code area. Because it crosses a county line, the county depends on the street: check your address.

Is ZIP 75657 a Census ZIP code area?

Yes. A ZIP Code Tabulation Area (ZCTA) is the Census version of a ZIP code; its edges can differ from USPS delivery routes (ZIP code vs ZCTA). Look up another ZIP on the ZIP code to county lookup.

Sources: Census 2020 ZCTA-county relationship file; Gazetteer 2024; GeoNames (CC BY 4.0, post office name); ACS 2019-2023 5-year. Data as of November 1, 2026. Not affiliated with USPS or any government agency.

FAQ

Frequently asked questions

What county is ZIP code 75657 in?
ZIP code 75657 (Jefferson, TX) is mostly in Marion County (87.3% of its land), with parts in Cass County and Harrison County.
Is ZIP 75657 in Cass County?
Partly: about 7.6% of its land is in Cass County.
What city is ZIP 75657?
The post office name is Jefferson.

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