Blackwells Mills, NJ Profile: Facts, Map & Data


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Blackwells Mills, New Jersey - Basic Facts

The Blackwells Mills Census Designated Place had a population of 803 as of July 1, 2017. Blackwells Mills ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in New Jersey. See peer rankings below.

The primary coordinate point for Blackwells Mills is located at latitude 40.4836 and longitude -74.5678 in Somerset County. The formal boundaries for the Blackwells Mills Census Designated Place (see map below) encompass a land area of 1.22 sq. miles and a water area of 0.07 sq. miles. Somerset County is in the Eastern time zone (GMT -5). The elevation is 46 feet.

The Blackwells Mills Census Designated Place (GNIS ID: 2583968) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Blackwells Mills Census Designated Place is located within Township of Franklin, a minor civil division (MCD) of Somerset County.

Beneath the boundary map are tables with Blackwells Mills 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 Blackwells Mills: Blackwell, Blackwells, Blackwell's Mills.

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Blackwells Mills Census Designated Place, NJ Boundary Map

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Boundary Maps: Township of Franklin | Somerset County | New Jersey Counties

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


Total Population 803
Daytime Population: Workers 32
Daytime Population: Residents 335
Total Daytime Population (TDP) 367
Ratio TDP/Total Population1 0.46
Population in Households 800
Population in Familes 732
Population in Group Qrtrs 3
Population Density2 657
Diversity Index3 56


Median Household Income $136,674
Average Household Income $174,640
Per Capita Income $55,193


Total Housing Units 241 (100%)
Owner Occupied HU 205 (85.1%)
Renter Occupied HU 29 (12.0%)
Vacant Housing Units 7 ( 2.9%)
Median Home Value $582,983
Average Home Value $569,390


Total Households 234
Average Household Size 3.42
Family Households 196
Average Family Size 4
  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 0.0% 0.0%
Households -0.23% -0.09%
Families -1.46% 0.0%
Median Household Income   2.23%
Per Capita Income   2.36%

Blackwells Mills, NJ - Peer Comparisons by Rank and Percentile

The table below compares Blackwells Mills 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 # 476 13th
Population Density # 464 15th
Diversity Index # 174 68th
Median Household Income # 42 92nd
Per Capita Income # 101 82nd

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

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