ZIP Code Tabulation Area · New Jersey

ZIP Code 08540: Princeton, NJ

ZIP Code 08540 (Princeton, Mercer County, New Jersey) has an estimated 50,388 residents in 18,609 households. The median household income is $176,983, the median home value is $767,900 and the median gross rent is $2,218/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

50,388

Margin of error ±1,927

Median household income

$176,983

Margin of error ±$15,327

Median home value

$767,900

Margin of error ±$36,959

Median gross rent

$2,218/mo

Margin of error ±$208

Median age

40.6 yrs

Margin of error ±1.0 yrs

Mean travel time to work

28.5 min

Margin of error ±3.4 min

How ZIP 08540 compares with New Jersey and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 0854040.6 yrsNew Jersey40.1 yrsUnited States38.9 yrs

Median household income

ZIP 08540$176,983New Jersey$103,556United States$80,734

Per capita income

ZIP 08540$89,601New Jersey$54,253United States$44,673

Poverty rate

ZIP 085408.2%New Jersey9.7%United States12.5%

Unemployment rate

ZIP 085404.1%New Jersey6.3%United States5.2%

Bachelor's degree or higher

ZIP 0854082.7%New Jersey43.6%United States35.7%

Median home value

ZIP 08540$767,900New Jersey$454,400United States$332,700

Median gross rent

ZIP 08540$2,218/moNew Jersey$1,720/moUnited States$1,413/mo

Owner-occupied homes

ZIP 0854063.7%New Jersey63.8%United States65.2%

Mean travel time to work

ZIP 0854028.5 minNew Jersey30.5 minUnited States26.4 min

Worked from home

ZIP 0854036.9%New Jersey16.8%United States15.1%

All figures for ZIP 08540

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 08540 — ACS 2020–2024 5-year estimates
MeasureZIP 08540Margin of errorNew JerseyUnited States
Total population50,388±1,9279,343,809334,922,499
Median age40.6 yrs±1.0 yrs40.1 yrs38.9 yrs
Households18,609±8403,507,701129,227,496
Median household income$176,983±$15,327$103,556$80,734
Per capita income$89,601±$4,188$54,253$44,673
Poverty rate8.2%±2.3 pts9.7%12.5%
Unemployment rate4.1%±0.9 pts6.3%5.2%
Bachelor's degree or higher82.7%±2.2 pts43.6%35.7%
Median home value$767,900±$36,959$454,400$332,700
Median gross rent$2,218/mo±$208$1,720/mo$1,413/mo
Owner-occupied homes63.7%±2.0 pts63.8%65.2%
Mean travel time to work28.5 min±3.4 min30.5 min26.4 min
Worked from home36.9%±3.2 pts16.8%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 08540
GroupZIP 08540New JerseyUnited States
White alone, not Hispanic or Latino49.5%50.9%57.4%
Black or African American alone, not Hispanic or Latino5.5%12.2%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.1%0.1%0.5%
Asian alone, not Hispanic or Latino33.2%10.0%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.0%0.2%
Some other race alone, not Hispanic or Latino1.1%0.8%0.6%
Two or more races, not Hispanic or Latino3.2%3.5%4.3%
Hispanic or Latino (of any race)7.4%22.5%19.3%

Where ZIP 08540 is

State
New Jersey
Main county
Mercer County— also overlaps Somerset County, Middlesex County
Largest overlapping place
Princeton (34% of the ZIP's land area)
Land area
51.72 sq mi· about 974 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Mercer County

08520 Mercer County, NJ08525 Mercer County, NJ08534 Mercer County, NJ08542 Princeton, NJ08544 Princeton, NJ08550 Mercer County, NJ08560 Mercer County, NJ08561 Windsor, NJ08608 Trenton, NJ08609 Trenton, NJ08610 White Horse, NJ08611 Trenton, NJ08618 Trenton, NJ08619 Mercerville, NJ08620 Yardville, NJ08628 Mercer County, NJ08629 Trenton, NJ08638 Trenton, NJ08648 Mercer County, NJ08690 Hamilton Square, NJ08691 Mercer County, NJ

See every ZIP code in New Jersey, or compare ZIP 08540 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.