Real Estate Data API

02558 Onset

21 active listings out of 490 total properties we track in ZIP 02558 (Onset, MA) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.

Get this data → API docs
Active
21
Median
$600K
±0%
Sales (12mo)
26
Tracked
490
Zoomed out

While you're here, take in the bigger picture — maps below show Massachusetts (statewide), not just 02558. Same company, same dataset, different resolution.

Get this data →
Key Numbers
Tracked
490
Active
21
Median list
$600K
Sales (12mo)
26
Get this data →
Key Numbers
Tracked
490
Active
21
Median list
$600K
Sales (12mo)
26
Get this data →
Key Numbers
Tracked
490
Active
21
Median list
$600K
Sales (12mo)
26
Get this data →
Key Numbers
Tracked
490
Active
21
Median list
$600K
Sales (12mo)
26
Get this data →
Key Numbers
Tracked
490
Active
21
Median list
$600K
Sales (12mo)
26

Inventory breakdown

Distribution of the 21 currently-active listings in ZIP 02558. Full dataset covers 490 properties — listings, off-market homes, rentals, and full history.

Active by price range
Under $300K 0 (0%)
$300K–$500K 8 (38.1%)
$500K–$750K 10 (47.6%)
$750K–$1M 3 (14.3%)
$1M–$2M 0 (0%)
$2M+ 0 (0%)
Active by bedroom count
Studio/1 bd 0
2 bd 15
3 bd 3
4 bd 3
5+ bd 0
Active by property type
Townhouse 12 (57.1%)
Single Family 4 (19%)
Multi Family 2 (9.5%)
Condo 2 (9.5%)
Manufactured 1 (4.8%)
For Developers

Get Onset 02558 data in your app

curl
request 
GET https://api.straply.com/v1/markets/zip/02558
Authorization: Bearer $STRAPLY_KEY
200 OK response 
{
  "zip": "02558",
  "total_tracked": 490,
  "active": 21,
  "median_list": 599900
}
Get an API key Read the docs

ZIP 02558 · Onset, MA real estate: market summary

As of June 2026, Straply tracks 490 homes in ZIP 02558 (Onset, MA), with 21 active for sale at a median list price of $599,900 (~$395/sq ft). Notably, it has notably historic housing — 36% of homes predate 1940.

Median list price
$599,900
Median $/sq ft
$395
Active listings
21
Properties tracked
490

Frequently asked: ZIP 02558 · Onset, MA real estate

What is the median home price in ZIP 02558?

The median list price in ZIP 02558 (Onset, MA) is $599,900 (about $395 per square foot), based on 21 active listings tracked by Straply as of June 2026.

What price range are homes in ZIP 02558?

Active listings in ZIP 02558 (Onset, MA) concentrate in: 48% $500k–$750k and 38% $300k–$500k.

How many homes are for sale in ZIP 02558?

Straply is tracking 21 active listings in ZIP 02558 (Onset, MA) out of 490 properties on record as of June 2026.

How old are the homes in ZIP 02558?

Most homes in ZIP 02558 (Onset, MA) were built in the 2020s. About 40% were built after 1980, while 36% predate 1940. The newest tracked home dates to 2025.

What types of homes are in ZIP 02558?

ZIP 02558 (Onset, MA) is mostly townhouses (57% of listings). Also common: single-family homes 19%, multi-family homes 10%.

How many bedrooms do homes in ZIP 02558 typically have?

The most common size in ZIP 02558 (Onset, MA) is 2 bd.

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