ZIP Code Tabulation Area · New Jersey

ZIP Code 08542: Princeton, NJ

ZIP Code 08542 (Princeton, Mercer County, New Jersey) has an estimated 2,533 residents in 1,264 households. The median household income is $105,524, the median home value is $754,100 and the median gross rent is $2,497/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

Some estimates have a large margin of error. 2 figures for this ZIP (owner-occupied, commute) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

2,533

Margin of error ±606

Median household income

$105,524

Margin of error ±$25,710

Median home value

$754,100

Margin of error ±$183,836

Median gross rent

$2,497/mo

Margin of error ±$543

Median age

37.2 yrs

Margin of error ±6.6 yrs

Mean travel time to work

20.7 min*

Margin of error ±12.5 min· estimate has a large margin of error

How ZIP 08542 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 0854237.2 yrsNew Jersey40.1 yrsUnited States38.9 yrs

Median household income

ZIP 08542$105,524New Jersey$103,556United States$80,734

Per capita income

ZIP 08542$72,582New Jersey$54,253United States$44,673

Poverty rate

ZIP 085424.2%New Jersey9.7%United States12.5%

Unemployment rate

ZIP 085425.0%New Jersey6.3%United States5.2%

Bachelor's degree or higher

ZIP 0854270.7%New Jersey43.6%United States35.7%

Median home value

ZIP 08542$754,100New Jersey$454,400United States$332,700

Median gross rent

ZIP 08542$2,497/moNew Jersey$1,720/moUnited States$1,413/mo

Owner-occupied homes

ZIP 0854232.3%*New Jersey63.8%United States65.2%

Mean travel time to work

ZIP 0854220.7 min*New Jersey30.5 minUnited States26.4 min

Worked from home

ZIP 0854220.9%New Jersey16.8%United States15.1%

All figures for ZIP 08542

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 08542 — ACS 2020–2024 5-year estimates
MeasureZIP 08542Margin of errorNew JerseyUnited States
Total population2,533±6069,343,809334,922,499
Median age37.2 yrs±6.6 yrs40.1 yrs38.9 yrs
Households1,264±2623,507,701129,227,496
Median household income$105,524±$25,710$103,556$80,734
Per capita income$72,582±$14,927$54,253$44,673
Poverty rate4.2%±3.1 pts9.7%12.5%
Unemployment rate5.0%±3.8 pts6.3%5.2%
Bachelor's degree or higher70.7%±9.0 pts43.6%35.7%
Median home value$754,100±$183,836$454,400$332,700
Median gross rent$2,497/mo±$543$1,720/mo$1,413/mo
Owner-occupied homes32.3%*±11.5 pts63.8%65.2%
Mean travel time to work20.7 min*±12.5 min30.5 min26.4 min
Worked from home20.9%±8.1 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 08542
GroupZIP 08542New JerseyUnited States
White alone, not Hispanic or Latino53.8%50.9%57.4%
Black or African American alone, not Hispanic or Latino14.2%12.2%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.1%0.5%
Asian alone, not Hispanic or Latino11.9%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 Latino0.0%0.8%0.6%
Two or more races, not Hispanic or Latino4.7%3.5%4.3%
Hispanic or Latino (of any race)15.3%22.5%19.3%

Where ZIP 08542 is

State
New Jersey
Main county
Mercer County
Largest overlapping place
Princeton (100% of the ZIP's land area)
Land area
0.39 sq mi· about 6,495 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, NJ08540 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 08542 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.