ZIP Code 78121 Housing Market
ZIP code 78121 is located in Guadalupe County, Texas. Based on the FHFA House Price Index, the most recent annual HPI value is 308.4 (2000 = 100) , with a year-over-year change of +3.70% as of 2025.
📈 78121 HPI Trend
FHFA House Price Index for Five-Digit ZIP Codes (2000 = 100)
About This ZIP Code
ZIP code 78121 is one of the most active real estate sub-markets in Guadalupe County, Texas. The FHFA House Price Index tracks cumulative price appreciation since 2000, providing a consistent measure of long-term value change in this specific ZIP area.
For full county-level context, see the Guadalupe County Housing Market page, which includes ACS median home values, rent, owner-occupancy, employment, migration, and other economic indicators.
Other Active ZIPs in Guadalupe County
| ZIP Code | HPI | YoY | Latest Year |
|---|---|---|---|
| 78155 | 328.1 | -1.10% | 2025 |
Data Source: FHFA House Price Index for Five-Digit ZIP Codes (All-Transactions Index, 2000 = 100). Data as of 2025. This product uses FHFA Data but is neither endorsed nor certified by FHFA.