Princeton, New Jersey Population 2021

31,021
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Princeton is a city located in Mercer County New Jersey. With a 2020 population of 31,021, it is the 26th largest city in New Jersey and the 1254th largest city in the United States . Princeton is currently declining at a rate of -0.27% annually but its population has increased by 152.06% since the most recent census, which recorded a population of 12,307 in 2010. Princeton reached it's highest population of 31,368 in 2017. Spanning over 18 miles, Princeton has a population density of 1,729 people per square mile.

The average household income in Princeton is $234,375 with a poverty rate of 7.85%. The median rental costs in recent years comes to $1,532 per month, and the median house value is $866,200. The median age in Princeton is 33.8 years, 30.7 years for males, and 39.4 years for females.

Princeton Demographics

According to the most recent ACS, the racial composition of Princeton was:

  • White: 72.55%
  • Asian: 16.90%
  • Black or African American: 5.68%
  • Two or more races: 3.75%
  • Other race: 1.04%
  • Native Hawaiian or Pacific Islander: 0.08%
  • Native American: 0.00%
The current population of Princeton, New Jersey is 31,021 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 31,270.The last official US Census in 2010 recorded the population at 12,307.

Princeton, New Jersey Population 2021

Population by Race

Race Population Percentage
White22,49072.55%
Asian5,23916.90%
Black or African American1,7625.68%
Two or More Races1,1613.75%
Some Other Race3231.04%
Native Hawaiian and Other Pacific Islander240.08%
American Indian and Alaska Native10.00%
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Princeton Population by Race

Princeton Population Pyramid $2021

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Princeton Median Age

33.8


Total

30.7


Male

39.4


Female

Princeton Adults

There are 25,338 adults, (5,201 of whom are seniors) in Princeton.

Princeton Age Dependency

53.9

Age Dependency Ratio

25.8

Old Age Dependency Ratio

28.1

Child Dependency Ratio

Princeton Sex Ratio

Female

15,262

49.23%

Male

15,738

50.77%

Princeton Population by Age

Princeton Renter vs Owner Occupied by Household Type

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Princeton Household Types

Type Owner Renter
Married77%23%
All60.2%39.8%
Female44.3%55.7%
Non Family34.5%65.5%
Male33%67%

60.2%

Rate of Home Ownership

Princeton Households and Families

Type Count Average Size Owned
All9,9592.5660.2
Married5,8583.177
Non Family3,1731.4234.5
Female7043.0544.3
Male2243.1233

3.04

Average Family Size

2.56

Average Household Size

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Princeton Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1820.98%
9th to 12th Grade5062.72%
High School Graduate1,4027.54%
Some College1,0495.65%
Associates Degree3852.07%
Bachelors Degree4,70625.33%
Graduate Degree10,35255.71%
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Princeton Educational Attainment by Sex (over 25)

Princeton Educational Attainment by Race

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Race Total High School Bachelors
White13,45513,21211,631
Asian2,7912,7212,462
Hispanic1,2741,113429
Black897683434
Other Race28718576
2+ Races237237121
Native American1

The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 88.21%.

Princeton Educational Attainment by Race

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Name Average Male Female
Overall$80,355$103,775$56,927
Less Than 9th Grade$25,145$2,500$26,453
High School Graduate$15,702$18,032$15,379
Some College$38,889$44,301$34,236
Bachelors Degree$61,239$81,096$49,931
Graduate Degree$109,880$136,298$84,706

$80,355

Average Earnings

$103,775

Average Male

$56,927

Average Female

Princeton Earnings by Educational Attainment

Princeton Language by Age

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Princeton Language

64.72% of Princeton residents speak only English, while 35.28% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 14.13% of the population.

Princeton Language

Princeton Poverty by Race

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Name Total In Poverty Poverty Rate
White17,6741,1386.44%
Asian4,07849612.16%
Hispanic1,91319910.40%
Black1,2111099.00%
Multiple926657.02%
Other3235517.03%
Native11100.00%

7.85%

Overall Poverty Rate

5.73%

Male Poverty Rate

10.08%

Female Poverty Rate

Poverty in Princeton

The race most likely to be in poverty in Princeton is Native, with 100.00% below the poverty level.

The race least likely to be in poverty in Princeton is White, with 6.44% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.58%. Among those working part-time, it was 11.22%, and for those that did not work, the poverty rate was 19.77%.

Princeton Poverty

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Name Poverty
High School20.05%
Some College14.33%
Less Than 9th Grade13.10%
Bachelors or Greater5.11%

Princeton Poverty Rate by Education

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Rate Poverty
Female Unemployed28.65%
Male Unemployed11.39%
Female Employed4.46%
Male Employed2.94%

Princeton Poverty Rate by Employment Status and Sex

Princeton Income by Household Type

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Name Median Mean
Households$137,672$234,375
Families$208,438$293,953
Married Families$221,809-
Non Families$57,615$84,744
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Income by Household Type

Princeton Marital Status

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Marriage Rates

47.9%

Overall Marriage Rate

48.8%

Male Marriage Rate

46.9%

Female Marriage Rate

Princeton Married by Age and Sex

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Princeton Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 45-54.

Princeton Marital Status by Race

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Princeton Marital Status

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513

Number of Veterans

488

Male Veterans

25

Female Veterans

War Veterans
Vietnam111
Korea103
World War II20
First Gulf War20
Second Gulf War12

Princeton Veterans by War

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Age Group Veterans
75+282
65 to 74103
35 to 5466
55 to 6450
18 to 3412

Princeton Veterans by Age

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Name Veterans % of Total
White4722.54%
Black261.73%
Hispanic211.10%
Asian150.35%

Princeton Veterans by Race

Princeton Veterans by Education

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1.06%

Veteran Poverty Rate

33.47%

Veteran Disability Rate

Princeton Veterans by Education

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59.7%

Labor Force Participation

57.8%

Employment Rate

3.3%

Unemployment Rate

Princeton Employment by Age

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Princeton Employment by Race

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Princeton Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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26.84%

Born in Princeton

71.49%

Native Born

28.51%

Foreign Born

15.60%

Non Citizen

12.90%

Naturalized

Place of Birth

71.49% of Princeton residents were born in the United States, with 26.84% having been born in New Jersey. 15.60% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Princeton Place of Birth

Year Population Growth Annual Growth Rate
202131,021-83-0.27%
202031,104-83-0.27%
201931,187-83-0.27%
201831,270-98-0.31%
201731,3683661.18%
201631,0028872.95%
201530,1154541.53%
201429,661-53-0.18%
201329,7143261.11%
201229,3881,3024.64%
201128,086-506-1.77%
201028,59214,3897.25%
200014,2032,1871.69%
199012,016-19-0.02%
198012,035-276-0.23%
197012,3114210.35%
196011,890-340-0.28%
195012,2304,5114.71%
19407,7197270.99%
19306,9921,0751.68%
19205,9177811.43%
19105,1361,2372.79%
19003,8994771.31%
18903,4222130.64%
18803,2094111.38%
18702,7980.00%

Princeton Population by Year