Dilley, TX ZIP Code

ZIP code, county, time zone and coordinates of Dilley, Texas

The ZIP code of Dilley, TX is 78017. It is in Frio County.

Mailing address format for Dilley

John Smith
123 Main St
DILLEY TX 78017
USA

USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.

ZIP code	Population	Area
78017	—	403.4 sq mi	Main

ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.

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What is the ZIP code for Dilley, TX?

The main ZIP code for Dilley, TX is 78017.

How many ZIP codes does Dilley have?

Dilley has 1 ZIP code.

What county is Dilley, TX in?

Dilley is in Frio County, Texas.

What time zone is Dilley in?

Dilley is in the America/Chicago time zone (CST, UTC-06:00 right now).

What are the coordinates of Dilley?

Latitude 28.66752, longitude -99.17647.

Last updated: November 14, 2026