ZIP Code Market Report
18109 — Allentown, PA
Data through February 2026 · Updated monthly
Avg Home Value
$263,128
▲ 5.3% year-over-year
Month-over-Month
-0.2%
▼ 0.2%
Single Family
$262,647
Condo / Co-op
--
The average home value in the 18109 ZIP code (Allentown, Pennsylvania) is $263,128 as of February 2026. Home prices are rising, up 5.3% compared to last year.
A 3-bedroom home in 18109 is valued at $265,904.
The market in 18109 has a $102,731 spread between bottom-tier homes at $214,726 and top-tier homes at $317,457. Bottom-tier properties represent the primary opportunity range for real estate investors using the 70% rule, fix-and-flip, or BRRRR strategies.
Looking ahead, Zillow's forecast model projects home values in the 18109 ZIP code will increase 1.0% over the next 12 months, bringing the projected average to approximately $265,759. This modest projected change should be factored into any investment analysis for properties in this area.
This report is part of the Carbon County market area in Pennsylvania. For a broader view of the housing market including rent data, market activity, and affordability analysis, see the full Carbon County report.
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Market Snapshot
18109 Housing Market at a Glance
Key metrics for the last 3 months with trend direction.
| Metric | Dec 2025 | Jan 2026 | Feb 2026 | 3-Mo Change |
|---|---|---|---|---|
| Avg Home Value | $264,074 | $263,607 | $263,128 | ▼ 0.4% |
| Single Family Value | $260,114 | $261,608 | $262,647 | ▲ 1.0% |
Home Values
18109 Home Value Trend
Historical home values for ZIP code 18109. Switch between All Homes, Single Family, Bottom Tier, and Top Tier.
Source: Zillow Research ZHVI / ZORI · Updated monthly
By Bedroom
What Homes Cost in 18109
Median home values by bedroom count in this ZIP code.
| Bedrooms | Median Value |
|---|---|
| 2 Bedrooms | $229,688 |
| 3 Bedrooms | $265,904 |
| 4 Bedrooms | $300,496 |
Property Types
Home Values by Property Type in 18109
How different property types compare in this ZIP code.
All Homes
$263,128
Single Family
$262,647
Bottom Tier
$214,726
Top Tier
$317,457
Forecast
12-Month Home Value Forecast for 18109
Zillow projects home values in 18109 will increase 1.0% over the next year, reaching approximately $265,759.
Current Value
$263,128
Projected Change
+1.0%
▲ 1.0%
Projected Value
$265,759
Source: Zillow Home Value Forecast (ZHVF). Forecasts are not guarantees.
Data Sources and Methodology
Home value data for ZIP code 18109 comes from the Zillow Home Value Index (ZHVI), updated monthly. ZHVI measures the typical home value using Zillow's automated valuation model, smoothed and seasonally adjusted.
This report was last updated February 2026. Data is refreshed on the 17th of each month.
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