ZIP Code 21817 Housing Market
ZIP code 21817 is located in Somerset County, Maryland. Based on the FHFA House Price Index, the most recent annual HPI value is 218.6 (2000 = 100) , with a year-over-year change of +11.74% as of 2025.
📈 21817 HPI Trend
FHFA House Price Index for Five-Digit ZIP Codes (2000 = 100)
📝 Local Market Notes
The housing market in ZIP code 21817, located in Somerset County, Maryland, exhibits a robust upward price trajectory. The Federal Housing Finance Agency’s House Price Index (HPI) for this area has risen from 150.03 in 2021 to 218.58 in 2025, representing a cumulative gain of approximately 45.7% over four years. This sustained appreciation indicates strong demand relative to supply within the specific micro-market. The most recent annual growth rate of 11.74% further confirms that price momentum remains elevated, outpacing the broader regional trends. ZIP 21817’s performance demonstrates significant divergence from both the county and state averages. While Somerset County experienced a 7.65% year-over-year increase and the state of Maryland saw only a 0.95% rise, the 21817 area gained nearly 12%. This substantial outperformance suggests that local factors are driving premium pricing, potentially due to limited inventory or unique neighborhood amenities. Compared to nearby ZIP codes 21851 and 21853, which recorded year-over-year changes of 9.88% and 3.92% respectively, 21817 is currently the strongest performer in the immediate vicinity, signaling a distinct sub-market dynamic. Characterizing the sub-market requires contextualizing the HPI against the parent county’s economic indicators. With a Somerset County median home value of $173,200 and a median household income of $64,943, the region is generally affordable. However, the high HPI index in 21817 suggests this specific ZIP commands a premium above the county median. The 73.1% owner-occupancy rate indicates a stable, residential community rather than a renter-heavy zone. For prospective buyers, the data implies that entry into ZIP 21817 requires budgeting for prices significantly higher than the county average. Residents should anticipate continued value appreciation, though the 7.40% national mortgage rate may constrain further demand-driven spikes. The market is currently defined by high relative growth and premium positioning within an otherwise affordable county.
About This ZIP Code
ZIP code 21817 is one of the most active real estate sub-markets in Somerset County, Maryland. 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 Somerset County Housing Market page, which includes ACS median home values, rent, owner-occupancy, employment, migration, and other economic indicators.
Other Active ZIPs in Somerset County
| ZIP Code | HPI | YoY | Latest Year |
|---|---|---|---|
| 21851 | 235.7 | +9.88% | 2025 |
| 21853 | 236.0 | +3.92% | 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.