Mountainside
Property Data

Union County, New Jersey

Explore accurate parcel and ownership records,
directly sourced from county assessors.

Union County

ZIP Codesby Total Population

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Total Population
7,0497,049

DistributionTotal Population

No data available

Demographics

Total Population

7,049

Median Age

48.0

Population Under 18

21.8%

Population 65+

24.2%

Total Households

2,508

Average Household Size

2.76

Mountainside, NJ housing and demographic statistics

ZIP/ZCTA areas can cross city and county boundaries. Each row describes its ZIP/ZCTA area, not the city as a whole. These values are not combined into a city estimate.

Individual ZIP/ZCTA estimates associated with Mountainside, NJ
ZIP/ZCTAPopulationMedian household incomeMedian monthly gross rentOwner-occupied share
070927,049$211,538$3,50187.9%

Source: U.S. Census Bureau American Community Survey (ACS), 2020–2024 five-year estimates, via Realie. Measurement period: –. Published by the Census Bureau on ; published by Realie on . These are five-year estimates, not a measurement of current conditions. — indicates unavailable or suppressed data.

Area property statistics

Recorded property characteristics and residential parcel-sale records for Mountainside, NJ. Sale amounts describe recorded transfers, not asking prices or appraisals. Each measure uses records with that information available.

Sale records use the AVM's residential, amount, floor-area, year-built, price-per-area, deed, buyer-relationship and distress filters. Known multi-parcel deals are also excluded. Unknown package flags are not proof of a single-parcel sale. Counts represent eligible parcel sale records. Recorded annual averages require at least 10 eligible sales. Projections must have enough history and pass checks against earlier recorded sales. Recent sales can be underreported; different coverage between years can affect the changes.

City measurements cover the selected county's portion of the city.

Annual sales comparison

Calendar 2025 recorded sales versus calendar 2026 model projections. Both years cover January 1–December 31. Change compares the 2026 projection with the recorded 2025 value. Annual average amounts weight each month by its sales count; they are not monthly medians.

Calendar-year sales comparison
Metric20252026 projectedChange (%)
Residential sale records48Recorded——
Average recorded sale amount$1,111,035Recorded——

Projections are not confirmed transactions or property valuations. Recent sales can be underreported; different coverage between years can affect the change. Unsupported values remain unavailable. Ranges reflect historical model errors, not confidence intervals. Annual comparison calculated . Assumed observation cutoff: May 2026; not verified completeness.

Recorded property statistics

Reported property statistics for Mountainside, NJ
MeasureMountainside, NJUnion County, NJ
Median recorded sale amount$1,000,000$665,000
Recorded amount, 10th percentile$749,300$385,000
Recorded amount, 90th percentile$1,697,330$1,460,000
Average recorded floor area (sq ft)2,5642,152
Average recorded bedrooms3.83.5
Average recorded bathrooms2.52.1
Median year built19561950
Condominium share of properties0.1%1.8%

Mountainside, NJ: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 22, 2026. Calculated . Published . Dataset last refreshed: .

Union County, NJ: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 22, 2026. Calculated . Published . Dataset last refreshed: .

Source: Realie property-record aggregates. Input publication and calculation dates do not establish complete transaction coverage. Missing measures are shown as — or omitted.

Other recent-period estimates

These use different periods from the calendar-year comparison. Estimates extend parcel-record counts and recorded amounts; they are not confirmed current transactions or individual-property values.

No supported recent-period estimates are available for this area. Recorded statistics above remain available.

Transaction coverage has not been verified. Known multi-parcel deals are excluded; missing package flags do not establish that every remaining sale covers one parcel. Amount change compares monthly record medians, not the appreciation of the same homes. Ranges reflect historical model errors; they are not confidence intervals and can exclude the point estimate. Assumed observation cutoff: May 2026; not a verified completeness date.

Properties in Mountainside

Showing page 1 of properties

1 Egan Court

Mountainside, NJ 07092

1 Highpoint Drive

Mountainside, NJ 07092

1 Little Court

Mountainside, NJ 07092

1 Robbie Lane

Mountainside, NJ 07092

10 Endor Lane

Mountainside, NJ 07092

10 Highpoint Drive

Mountainside, NJ 07092

10 Little Court

Mountainside, NJ 07092

10 Park West Drive

Mountainside, NJ 07092

10 Tanglewood Lane

Mountainside, NJ 07092

1000 Chimney Ridge Drive

Mountainside, NJ 07092

1000 Mary Allen Lane

Mountainside, NJ 07092

1000 Springfield Avenue

Mountainside, NJ 07092

1000 Sunny Slope Drive

Mountainside, NJ 07092

1001 Charles Street

Mountainside, NJ 07092

1001 Sylvan Lane

Mountainside, NJ 07092

1003 Charles Street

Mountainside, NJ 07092

1003 Chimney Ridge Drive

Mountainside, NJ 07092

1004 Sunny Slope Drive

Mountainside, NJ 07092

1005 Mountain Avenue

Mountainside, NJ 07092

1005 Sylvan Lane

Mountainside, NJ 07092

1007 Sunny Slope Drive

Mountainside, NJ 07092

1008 Mary Allen Lane

Mountainside, NJ 07092

1008 Springfield Avenue

Mountainside, NJ 07092

1008 Sunny Slope Drive

Mountainside, NJ 07092

1009 Charles Street

Mountainside, NJ 07092

1009 Mary Allen Lane

Mountainside, NJ 07092

1009 Mountain Avenue

Mountainside, NJ 07092

101 Echo Ridge Way

Mountainside, NJ 07092

1011 Sunny Slope Drive

Mountainside, NJ 07092

1011 Us Highway 22

Mountainside, NJ 07092

1012 Mary Allen Lane

Mountainside, NJ 07092

1012 Springfield Avenue

Mountainside, NJ 07092

1012 Sunny Slope Drive

Mountainside, NJ 07092

1015 Charles Street

Mountainside, NJ 07092

1015 Sunny Slope Drive

Mountainside, NJ 07092

1016 Mary Allen Lane

Mountainside, NJ 07092

1016 Springfield Avenue

Mountainside, NJ 07092

1017 Mary Allen Lane

Mountainside, NJ 07092

1018 Mountain Avenue

Mountainside, NJ 07092

1019 Charles Street

Mountainside, NJ 07092

1019 Prospect Avenue

Mountainside, NJ 07092

1019 Sunny Slope Drive

Mountainside, NJ 07092

102 Echo Ridge Way

Mountainside, NJ 07092

102 New Providence Road

Mountainside, NJ 07092

1020 Elston Drive

Mountainside, NJ 07092

1020 Mary Allen Lane

Mountainside, NJ 07092

1020 Springfield Avenue

Mountainside, NJ 07092

1020 Summit Lane

Mountainside, NJ 07092

1021 Ledgewood Road

Mountainside, NJ 07092

1021 Mary Allen Lane

Mountainside, NJ 07092

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