Zip Code 78640 — Kyle, TX
78640 is a ZIP Code associated with Kyle, TX, located within Hays. The postal region supports an estimated population of 77,531 residents across Data Pending housing units, with a population density of 334.2 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (29.996190, -97.823550)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 78640 |
| Primary City | Kyle |
| State / Province | TX |
| County | Hays |
| Total Population | 77,531 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 334.2 people/sq mi |
| Timezone | America/Chicago |
How 78640 Compares
| Metric | ZIP 78640 | Hays County | TX State Average |
|---|
| Population | 77,531 | 286,831 | 30,188,035 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 334.2 /sq mi | -- | -- |
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 →