Real Estate Data API

18104 Allentown

140 active listings out of 20K total properties we track in ZIP 18104 (Allentown, PA) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.

Get this data → API docs
Active
140
Median
$440K
±0%
Sales (12mo)
650
Tracked
20K
Zoomed out

While you're here, take in the bigger picture — maps below show Pennsylvania (statewide), not just 18104. Same company, same dataset, different resolution.

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Key Numbers
Tracked
20K
Active
140
Median list
$440K
Sales (12mo)
650
Get this data →
Key Numbers
Tracked
20K
Active
140
Median list
$440K
Sales (12mo)
650
Get this data →
Key Numbers
Tracked
20K
Active
140
Median list
$440K
Sales (12mo)
650
Get this data →
Key Numbers
Tracked
20K
Active
140
Median list
$440K
Sales (12mo)
650
Get this data →
Key Numbers
Tracked
20K
Active
140
Median list
$440K
Sales (12mo)
650

Inventory breakdown

Distribution of the 140 currently-active listings in ZIP 18104. Full dataset covers 20K properties — listings, off-market homes, rentals, and full history.

Active by price range
Under $300K 21 (15.6%)
$300K–$500K 74 (54.8%)
$500K–$750K 27 (20%)
$750K–$1M 10 (7.4%)
$1M–$2M 3 (2.2%)
$2M+ 0 (0%)
Active by bedroom count
Studio/1 bd 0
2 bd 6
3 bd 68
4 bd 47
5+ bd 16
Active by property type
Single Family 108 (77.1%)
Townhouse 27 (19.3%)
Multi Family 2 (1.4%)
Condo 2 (1.4%)
Lot 1 (0.7%)
For Developers

Get Allentown 18104 data in your app

curl
request 
GET https://api.straply.com/v1/markets/zip/18104
Authorization: Bearer $STRAPLY_KEY
200 OK response 
{
  "zip": "18104",
  "total_tracked": 19895,
  "active": 140,
  "median_list": 439900
}
Get an API key Read the docs

ZIP 18104 · Allentown, PA real estate: market summary

As of June 2026, Straply tracks 19,895 homes in ZIP 18104 (Allentown, PA), with 140 active for sale at a median list price of $439,900 (~$204/sq ft). Notably, it has notably historic housing — 22% of homes predate 1940.

Median list price
$439,900
Median $/sq ft
$204
Active listings
140
Properties tracked
19,895

Frequently asked: ZIP 18104 · Allentown, PA real estate

What is the median home price in ZIP 18104?

The median list price in ZIP 18104 (Allentown, PA) is $439,900 (about $204 per square foot), based on 140 active listings tracked by Straply as of June 2026.

What price range are homes in ZIP 18104?

Active listings in ZIP 18104 (Allentown, PA) concentrate in: 55% $300k–$500k and 20% $500k–$750k.

How many homes are for sale in ZIP 18104?

Straply is tracking 140 active listings in ZIP 18104 (Allentown, PA) out of 19,895 properties on record as of June 2026.

How old are the homes in ZIP 18104?

Most homes in ZIP 18104 (Allentown, PA) were built in the 1950s. About 35% were built after 1980, while 22% predate 1940. The newest tracked home dates to 2026.

What types of homes are in ZIP 18104?

ZIP 18104 (Allentown, PA) is mostly single-family homes (77% of listings). Also common: townhouses 19%.

How many bedrooms do homes in ZIP 18104 typically have?

The most common size in ZIP 18104 (Allentown, PA) is 3 bd.

Data as of June 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.