What the Pros Know
Market Snapshot
Zip Code 18031 | Lehigh County, PA
12,337
Population
YoY
202239.3
Median Age
YoY
2022$94,896
Median Household Income
YoY
2022$475,000
Median Sale Price
1.6% MoM
26.1% YoY
6/202519
Homes Sold
13.6% MoM
18.8% YoY
6/20250.3
Months Inventory
13.2% MoM
75.4% YoY
6/202514
Days on Market
1 MoM
6 YoY
6/20256
Listings
25.0% MoM
50.0% YoY
6/2025200
Price per Sq Ft
17.3% MoM
1.4% YoY
6/2025
See 18031 on Zillow
1. Population Data from U.S. Census Bureau.
2. Sales Data provided by Redfin, a national real estate brokerage.
MoM = Month over Month. The percentage change from the previous month to the current month.
YoY = Year over Year. The percentage change from the same period the previous year to the current period.