Updated May 2026Redfin3-month window
18109 Real Estate Market Update: Allentown, PA, May 2026
The latest housing-market numbers for ZIP code 18109 in Allentown, Pennsylvania, for May 2026: a $255K median sale price, straight from Redfin Data Center. ZIP-level figures are a rolling three-month window (last public Redfin release).
| Metric | Value | MoM | YoY |
|---|---|---|---|
| Median sale price | $255K | ▲ +4.1% | ▼ -4.7% |
| Days on market | 8 | ▼ -46.7% | ▼ -15.8% |
| Homes for sale | 18 | ▼ -10.0% | ▲ +50.0% |
| Sale-to-list | 100.0% | ▲ +1.5% | ▲ +0.2% |
| Homes sold | 37 | ▲ +19.4% | ▲ +27.6% |
Figures from Redfin Data Center (a rolling three-month window (last public Redfin release)). Verify against your MLS before posting. Not a valuation for a specific home.
What the 18109 numbers say
The 18109 ZIP in Allentown is cooling. The median sale price sits at $255,000, 4.7% below last year. Homes here move fast: a typical listing goes under contract in about 8 days, and sellers are getting 100.0% of list price.
With 18 homes for sale, 18109 is currently an active market.
What this means if you sell in 18109
Use these figures to set expectations early with each client. Lead a listing appointment with the $255K median price and the 8-day pace, show the year-over-year direction, and frame 18109 as an active market. A buyer or seller client trusts an agent who knows their exact ZIP, not just the metro average.
How we track the 18109 market
We built LOKAL to pull 18109's numbers straight from Redfin Data Center, so an agent and a client read from the same source. For May 2026 we recorded a $255K median sale price, -4.7% year over year, a 100.0% sale-to-list ratio and a +4.1% month-over-month move across 37 recorded sales. That compares with roughly $268K a year earlier, in 2025. This ZIP is served from the last public Redfin release (frozen since June 2026) and only appears because it cleared at least 20 recorded sales for the period, so the median stays reliable instead of noisy. Both sources have published ZIP-level series for years, which is what lets us show month-over-month and year-over-year change here in 2026. LOKAL is independent and not affiliated with Redfin; always verify against your MLS before you publish.
ZIP-code areas follow U.S. Postal Service boundaries; for complementary demographics on 18109 (population, median household income, owner-occupancy), see the U.S. Census Bureau profile for this ZIP Code Tabulation Area. LOKAL covers price and pace; the Census covers who lives there.
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Build the 18109 post →Frequently asked: the 18109 housing market
- What is the median home price in ZIP 18109 (Allentown, PA)?
- As of May 2026, the median sale price in ZIP 18109 is $255,000 (-4.7% year over year), per Redfin Data Center. Figures are a rolling three-month window (last public Redfin release) for this ZIP code.
- Is ZIP 18109 a buyer's or seller's market right now?
- ZIP 18109 is currently an active market, based on a 100.0% sale-to-list ratio, about 8 days on market for May 2026.
- How long do homes take to sell in ZIP 18109?
- A typical listing in 18109 goes under contract in about 8 days as of May 2026. Always verify against your local MLS before quoting figures to clients.
- Where does this 18109 market data come from?
- All figures for 18109 come from Redfin Data Center: a rolling three-month window (last public Redfin release). LOKAL turns them into a ready-to-post carousel, story and square graphic. LOKAL is not affiliated with Redfin.
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Data from Redfin Data Center (ZIP-level market data, a rolling three-month window (last public Redfin release)), not a valuation for a specific home.