Mountainside, NJ Profile: Facts & Data

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Mountainside, New Jersey - Basic Facts

The Borough of Mountainside had a population of 6,846 as of July 1, 2020.

The primary coordinate point for Mountainside is located at latitude 40.6723 and longitude -74.3574 in Union County. The formal boundaries for the Borough of Mountainside encompass a land area of 4.01 sq. miles and a water area of 0.04 sq. miles. Union County is in the Eastern time zone (GMT -5). The elevation is 144 feet.

The Borough of Mountainside (GNIS ID: 885311) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.


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Mountainside, NJ Data & Demographics (As of July 1, 2020)

POPULATION

Total Population 6,846 (100%)
Population in Households 6,693 (97.8%)
Population in Families 5,923 (86.5%)
Population in Group Quarters1 153 ( 2.2%)
Population Density 1,713
Diversity Index2 36
 
 

INCOME

Median Household Income $162,452
Average Household Income $208,667
% of Income for Mortgage4 17%
Per Capita Income $76,460
Wealth Index5 342
 

HOUSING

Total HU (Housing Units) 2,606 (100%)
Owner Occupied HU 2,245 (86.1%)
Renter Occupied HU 262 (10.1%)
Vacant Housing Units 99 ( 3.8%)
Median Home Value $656,398
Average Home Value $718,366
Housing Affordability Index3 131
 

HOUSEHOLDS

Total Households 2,507
Average Household Size 2.67
Family Households 1,891
Average Family Size 3
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.

GROWTH RATE / YEAR

2010-2020 2020-2025
Population 0.24% 0.15%
Households 0.16% 0.08%
Families 0.14% 0.08%
Median Household Income   1.19%
Per Capita Income   1.54%
Owner Occupied HU   0.16%

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Mountainside, NJ - Peer Comparisons by Rank and Percentile

The table below compares Mountainside to the other 545 incorporated cities, towns and CDPs in New Jersey by rank and percentile using July 1, 2020 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 215 61st
Population Density # 362 34th
Median Household Income # 38 93rd
Housing Affordability Index # 308 57th
Per Capita Income # 52 91st
Diversity Index # 330 40th

Additional comparisons and rankings can be made with a VERY EASY TO USE New Jersey Census Data Comparison Tool.

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