ZIP Code 78665 Housing Market
ZIP code 78665 is located in Williamson County, Texas. Based on the FHFA House Price Index, the most recent annual HPI value is 275.9 (2000 = 100) , with a year-over-year change of +3.48% as of 2025.
📈 78665 HPI Trend
FHFA House Price Index for Five-Digit ZIP Codes (2000 = 100)
About This ZIP Code
ZIP code 78665 is one of the most active real estate sub-markets in Williamson 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 Williamson County Housing Market page, which includes ACS median home values, rent, owner-occupancy, employment, migration, and other economic indicators.
Other Active ZIPs in Williamson County
| ZIP Code | HPI | YoY | Latest Year |
|---|---|---|---|
| 78681 | 326.0 | -0.92% | 2025 |
| 78626 | 337.8 | -0.82% | 2025 |
| 78628 | 302.2 | -2.49% | 2025 |
| 78633 | 274.4 | -0.91% | 2025 |
| 78717 | 313.8 | +41.13% | 2022 |
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.