Mountainside NJ
62 active listings out of 2.9K total properties we track across 4 Mountainside ZIPs — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
Download Mountainside, NJ property data
3,552,486 property records for all of New Jersey — address, beds/baths, sqft, year built, status, list and last-sale price, price and tax history. Parquet or CSV.
Files are published by ZIP, county and state; this city is inside the state file.
Monthly snapshot · 303.0 MB Parquet · CSV (604.2 MB)
Records keep changing after a snapshot is compiled.
Rebuilt every day · same columns, same file layout
While you're here, take in the bigger picture — maps below show New Jersey (statewide), not just Mountainside. Same company, same dataset, different resolution.
Inventory breakdown
Distribution of the 62 currently-active listings in Mountainside, NJ. Full dataset covers 2.9K properties — listings, off-market homes, rentals, and full history.
ZIP codes in Mountainside
Drill into any ZIP for hex-level breakdowns.
Nearby cities
Other New Jersey cities within driving distance.
Get Mountainside, NJ data in your app
GET https://api.straply.com/v1/markets/city/mountainside-nj
Authorization: Bearer $STRAPLY_KEY{
"city": "mountainside-nj",
"total_tracked": 2872,
"active": 62,
"median_list": 975000
}Mountainside, NJ real estate: market summary
As of November 2026, Straply tracks 2,872 homes in Mountainside, NJ, with 62 active for sale at a median list price of $975,000 (~$423/sq ft). Notably, home prices are climbing — the median sale price is up 25% year over year.
- Median list price
- $975,000
- Median $/sq ft
- $423
- Active listings
- 62
- Median sale price
- $1,125,000 (+25% YoY)
- Properties tracked
- 2,872
Frequently asked: Mountainside, NJ real estate
What is the median home price in Mountainside?
The median list price in Mountainside, NJ is $975,000 (about $423 per square foot), based on 62 active listings tracked by Straply as of November 2026.
What price range are homes in Mountainside?
Active listings in Mountainside, NJ concentrate in: 51% $750k–$1m and 38% $1m–$2m.
Are home prices in Mountainside going up or down?
The median sale price is $1,125,000, up 25% year over year. Straply tracked 80 sales here over the past 12 months.
How many homes are for sale in Mountainside?
Straply is tracking 62 active listings in Mountainside, NJ out of 2,872 properties on record as of November 2026.
How old are the homes in Mountainside?
Most homes in Mountainside, NJ were built in the 1950s. About 14% were built after 1980, while 7% predate 1940. The newest tracked home dates to 2026.
What types of homes are in Mountainside?
Mountainside, NJ is mostly single-family homes (92% of listings).
How many bedrooms do homes in Mountainside typically have?
The most common size in Mountainside, NJ is 3 bd.
What areas are near Mountainside?
Nearby markets Straply also tracks include Westfield, Garwood, Scotch Plains, Springfield.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.