Somerville, NJ Profile: Facts, Map & Data


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Somerville, New Jersey - Basic Facts

The Borough of Somerville had a population of 12,506 as of July 1, 2017. Somerville ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in New Jersey. See peer rankings below.

The primary coordinate point for Somerville is located at latitude 40.5697 and longitude -74.6077 in Somerset County. The formal boundaries for the Borough of Somerville (see map below) encompass a land area of 2.33 sq. miles and a water area of 0.03 sq. miles. Somerset County is in the Eastern time zone (GMT -5). The elevation is 56 feet.

The Borough of Somerville (GNIS ID: 885398) 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.

Beneath the boundary map are tables with Somerville population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Somerville: Raritan.

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Borough of Somerville, NJ Boundary Map

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Somerville, NJ Data & Demographics (As of July 1, 2017)


Total Population 12,506
Daytime Population: Workers 9,873
Daytime Population: Residents 5,670
Total Daytime Population (TDP) 15,543
Ratio TDP/Total Population1 1.24
Population in Households 12,042
Population in Familes 9,202
Population in Group Qrtrs 464
Population Density2 5,362
Diversity Index3 76


Median Household Income $74,092
Average Household Income $88,194
Per Capita Income $34,600


Total Housing Units 5,116 (100%)
Owner Occupied HU 2,114 (41.3%)
Renter Occupied HU 2,595 (50.7%)
Vacant Housing Units 407 ( 8.0%)
Median Home Value $301,429
Average Home Value $315,114


Total Households 4,709
Average Household Size 2.56
Family Households 2,850
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population 0.46% 0.48%
Households 0.35% 0.42%
Families 0.35% 0.42%
Median Household Income   2.03%
Per Capita Income   2.99%

Somerville, NJ - Peer Comparisons by Rank and Percentile

The table below compares Somerville to the other 545 incorporated cities, towns and CDPs in New Jersey by rank and percentile using July 1, 2017 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 # 100 82nd
Population Density # 97 82nd
Diversity Index # 60 89th
Median Household Income # 303 45th
Per Capita Income # 334 39th

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

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