Allentown, Pennsylvania (ZIP 18103) ranks No. 16 on Realtor.com®’s 2025 Hottest ZIP Codes list.
Situated in the Lehigh Valley region, Allentown offers a strategic location, relative affordability, and a mix of urban and suburban living that’s resonating with buyers in 2025.
From January to June 2025, Allentown listings received 2.9 times more views per property than the U.S. average and sold in a median of just 24 days. The median listing price during that period was $433,000, putting it just below the national median of $440,000 and making it one of the more affordable markets in the Top 20.
A competitive player in Pennsylvania’s housing market
Allentown is the highest-ranked Pennsylvania market in this year’s list. Its appeal stems from its balance of price and location—close enough to commute to Philadelphia or New York City while offering more space and a lower cost of living…