# Plainsboro Center, New Jersey

Plainsboro Center is an unincorporated community and census-designated place (CDP) in Plainsboro Township, Middlesex County, New Jersey, United States. As of the 2020 census, the CDP's population was 2,760, its highest decennial count ever and an increase of 48 (+1.8%) from the 2,712 recorded at the 2010 census.

## Geography

The community is in southwestern Middlesex County and occupies south-central Plainsboro Township. The CDP is bordered to the east by Princeton Meadows. The borough of Princeton is 5 miles (8 km) to the west, Cranbury is the same distance to the east, and New Brunswick, the Middlesex county seat, is 14 miles (23 km) to the northeast.
According to the U.S. Census Bureau, the Plainsboro Center CDP has an area of 0.757 square miles (1.96 km$^2$), including 0.735 square miles (1.90 km$^2$) of land and 0.022 square miles (0.057 km$^2$) of water (2.91%). Plainsboro Pond on Cranbury Brook forms the southern edge of the CDP, and Devils Brook passes just north of the community. Both brooks are west-flowing tributaries of the Millstone River and thus part of the Raritan River watershed.

## Demographics
### 2010 census

The 2010 United States census counted 2,712 people, 1,192 households, and 735 families in the CDP. The population density was 3,572.0 people per square mile (1,379.2 people/km$^2$). There were 1,311 housing units at an average density of 1,726.7 units per square mile (666.7 units/km$^2$). The racial makeup was 42.74% (1,159) White, 4.87% (132) Black or African American, 0.44% (12) Native American, 48.53% (1,316) Asian, 0.04% (1) Pacific Islander, 1.07% (29) from other races, and 2.32% (63) from two or more races. Hispanic or Latino of any race were 5.09% (138) of the population.
Of the 1,192 households, 32.6% had children under the age of 18; 53.7% were married couples living together; 5.8% had a female householder with no husband present and 38.3% were non-families. Of all households, 33.9% were made up of individuals and 5.0% had someone living alone who was 65 years of age or older. The average household size was 2.28 and the average family size was 2.97.
23.0% of the population were under the age of 18, 5.1% from 18 to 24, 41.0% from 25 to 44, 22.7% from 45 to 64, and 8.1% who were 65 years of age or older. The median age was 33.9 years. For every 100 females, the population had 96.9 males. For every 100 females ages 18 and older there were 95.8 males.

### 2000 census

As of the 2000 United States Census there were 2,209 people, 1,026 households, and 572 families living in the CDP. The population density was 1,273.0 people/km$^2$ (3,297 people/sq mi). There were 1,089 housing units at an average density of 627.6 units/km$^2$ (1,625 units/sq mi). The racial makeup of the CDP was 53.19% White, 4.75% African American, 0.05% Native American, 38.89% Asian, 0.95% from other races, and 2.17% from two or more races. Hispanic or Latino of any race were 4.21% of the population.
There were 1,026 households, out of which 29.1% had children under the age of 18 living with them, 48.8% were married couples living together, 5.2% had a female householder with no husband present, and 44.2% were non-families. 37.8% of all households were made up of individuals, and 1.8% had someone living alone who was 65 years of age or older. The average household size was 2.15 and the average family size was 2.90.
In the CDP the population was spread out, with 21.9% under the age of 18, 7.3% from 18 to 24, 51.1% from 25 to 44, 16.3% from 45 to 64, and 3.4% who were 65 years of age or older. The median age was 32 years. For every 100 females, there were 107.6 males. For every 100 females age 18 and over, there were 107.1 males.
The median income for a household in the CDP was $70,759, and the median income for a family was $81,201. Males had a median income of $70,110 versus $42,500 for females. The per capita income for the CDP was $36,555. About 4.8% of families and 3.8% of the population were below the poverty line, including 3.6% of those under age 18 and 35.8% of those age 65 or over.