Zip Code 78387 — Sinton, TX
78387 is a ZIP Code associated with Sinton, TX, located within San Patricio. 78387 ranks #4 out of 9 ZIP codes in San Patricio County by population (and #832 out of 1,990 in TX). The area supports an estimated population of 9,640 residents across Data Pending housing units, with a population density of 21.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (28.082240, -97.552550)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 78387 |
| Primary City | Sinton |
| State / Province | TX |
| County | San Patricio |
| Total Population | 9,640 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 21.6 people/sq mi |
| Timezone | America/Chicago |
How 78387 Compares
| Metric | ZIP 78387 | San Patricio County | TX State Average |
|---|
| Population | 9,640 | 76,326 (Total) | 30,188,035 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 21.6 /sq mi | -- | -- |
| County Pop Rank | #4 of 9 | -- | -- |
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 →