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What county is ZIP code 79103 in?

Updated · Data: U.S. Census Bureau

ZIP code 79103 (Amarillo, TX) is mostly in Potter County (50.0% of its land), with parts in Randall County.

Which counties is ZIP 79103 in?

CountyShare of land areaChart
Potter County50.0%
Randall County50.0%

About 11,591 people live in this ZIP code area. Because it crosses a county line, the county depends on the street: check your address.

Is ZIP 79103 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 79103 in?
ZIP code 79103 (Amarillo, TX) is mostly in Potter County (50.0% of its land), with parts in Randall County.
Is ZIP 79103 in Randall County?
Partly: about 50.0% of its land is in Randall County.
What city is ZIP 79103?
The post office name is Amarillo.

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