Princeton Flag

Princeton

County:
Mercer County
County Seat:
No
Area (mi²):
17.946
State:
New Jersey

Princeton is a township located in Mercer County, New Jersey. Princeton has a 2026 population of 31,853. Princeton is currently growing at a rate of 0.64% annually and its population has increased by 4% since the most recent census, which recorded a population of 30,629 in 2020.

The median household income in Princeton is $192,079 with a poverty rate of 6.12%. The median age in Princeton is 28.5 years: 27.5 years for males, and 29.9 years for females. For every 100 females there are 97.3 males.

31.9K
Total Population
1,775
Density (mi²)
204 0.64%
Growth

Princeton Population

Princeton Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202631,8532040.64%
202531,6492040.65%
202431,4458152.66%
202330,6301940.64%
202230,436-116-0.38%
202130,552-77-0.25%
202030,629-60-0.2%
201931,160-146-0.47%
201831,306-85-0.27%
201731,3913721.2%
201631,0198932.96%
201530,1264561.54%
201429,670-51-0.17%
201329,7213281.12%
201229,3931,3054.65%
201128,088-504-1.76%
201028,59216,285132.32%
200014,2032,18718.2%
199012,016-19-0.16%
198012,035-276-2.24%
197012,3114213.54%
196011,890-340-2.78%
195012,2304,51158.44%
19407,71972710.4%
19306,9921,07518.17%
19205,91778115.21%
19105,1361,23731.73%
19003,89947713.94%
18903,4222136.64%
18803,20941114.69%
18702,79800%

Median Age

Overall: 28.5 years
Female: 29.9 years
Male: 27.5 years

Princeton Adults

There are 24,967 adults, (3,999 of whom are seniors) in Princeton.

Sex Ratio

Female: 15,589 (50.7%)
Male: 15,167 (49.3%)

Demographics

The racial composition of Princeton includes 60.16% White, 21.79% Asian, 6.45% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White18,50260.16%
Asian6,70121.79%
Two or more races2,4968.12%
Black or African American1,9836.45%
Other race7752.52%
Native American2860.93%
Native Hawaiian or Pacific Islander130.04%
Race
Population ↓
Percentage (of total)
Two or more races8432.74%
White7102.31%
Other race5191.69%
Native American2040.66%
Black or African American980.32%
Asian830.27%
Race
Population ↓
Percentage (of total)
White17,79257.85%
Asian6,61821.52%
Black or African American1,8856.13%
Two or more races1,6535.37%
Other race2560.83%
Native American820.27%
Native Hawaiian or Pacific Islander130.04%

Princeton Marital Status

Economics and Income Statistics

Princeton 's average per capita income is $101,988. Household income levels show a median of $192,079. The poverty rate stands at 6.12%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Families$250,001$336,937
Married Families$250,001-
Households$192,079$275,137
Non Families$82,500$139,659

$101,988

Average Income

$192,079

Median Household Income

6.12%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)