18109 Allentown
78 active listings out of 6.6K total properties we track in ZIP 18109 (Allentown, PA) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
While you're here, take in the bigger picture — maps below show Pennsylvania (statewide), not just 18109. Same company, same dataset, different resolution.
- Tracked
- 6.6K
- Active
- 78
- Median list
- $270K
- Sales (12mo)
- 170
- Tracked
- 6.6K
- Active
- 78
- Median list
- $270K
- Sales (12mo)
- 170
- Tracked
- 6.6K
- Active
- 78
- Median list
- $270K
- Sales (12mo)
- 170
- Tracked
- 6.6K
- Active
- 78
- Median list
- $270K
- Sales (12mo)
- 170
- Tracked
- 6.6K
- Active
- 78
- Median list
- $270K
- Sales (12mo)
- 170
Inventory breakdown
Distribution of the 78 currently-active listings in ZIP 18109. Full dataset covers 6.6K properties — listings, off-market homes, rentals, and full history.
Get Allentown 18109 data in your app
GET https://api.straply.com/v1/markets/zip/18109
Authorization: Bearer $STRAPLY_KEY{
"zip": "18109",
"total_tracked": 6647,
"active": 78,
"median_list": 270000
}Nearby ZIP codes
Other Pennsylvania ZIPs within a short drive of 18109.
ZIP 18109 · Allentown, PA real estate: market summary
As of November 2026, Straply tracks 6,647 homes in ZIP 18109 (Allentown, PA), with 78 active for sale at a median list price of $270,000 (~$176/sq ft). Notably, it has notably historic housing — 34% of homes predate 1940.
- Median list price
- $270,000
- Median $/sq ft
- $176
- Active listings
- 78
- Median sale price
- $274,000 (+5% YoY)
- Properties tracked
- 6,647
Frequently asked: ZIP 18109 · Allentown, PA real estate
What is the median home price in ZIP 18109?
The median list price in ZIP 18109 (Allentown, PA) is $270,000 (about $176 per square foot), based on 78 active listings tracked by Straply as of November 2026.
What price range are homes in ZIP 18109?
Active listings in ZIP 18109 (Allentown, PA) concentrate in: 66% under $300k and 27% $300k–$500k.
Are home prices in ZIP 18109 going up or down?
The median sale price is $274,000, up 5% year over year. Straply tracked 170 sales here over the past 12 months.
How many homes are for sale in ZIP 18109?
Straply is tracking 78 active listings in ZIP 18109 (Allentown, PA) out of 6,647 properties on record as of November 2026.
How old are the homes in ZIP 18109?
Most homes in ZIP 18109 (Allentown, PA) were built in the 1950s. About 17% were built after 1980, while 34% predate 1940. The newest tracked home dates to 2025.
What types of homes are in ZIP 18109?
ZIP 18109 (Allentown, PA) is mostly single-family homes (42% of listings). Also common: townhouses 32%, multi-family homes 12%.
How many bedrooms do homes in ZIP 18109 typically have?
The most common size in ZIP 18109 (Allentown, PA) is 3 bd.
What areas are near ZIP 18109?
Nearby markets Straply also tracks include Allentown 18102, Bethlehem 18018, Catasauqua 18032, Allentown 18103.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.