Zip Code 78017 — Dilley, TX
78017 is a ZIP Code associated with Dilley, TX, located within Frio. 78017 ranks #2 out of 4 ZIP codes in Frio County by population (and #985 out of 1,990 in TX). The area supports an estimated population of 5,551 residents across Data Pending housing units, with a population density of 5.3 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (28.724560, -99.204550)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 78017 |
| Primary City | Dilley |
| State / Province | TX |
| County | Frio |
| Total Population | 5,551 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 5.3 people/sq mi |
| Timezone | America/Chicago |
How 78017 Compares
| Metric | ZIP 78017 | Frio County | TX State Average |
|---|
| Population | 5,551 | 18,505 (Total) | 30,188,035 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 5.3 /sq mi | -- | -- |
| County Pop Rank | #2 of 4 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →