ZIP Code Tabulation Area · New Jersey

ZIP Code 07840: Warren County, NJ

ZIP Code 07840 (Warren County, New Jersey) has an estimated 32,105 residents in 12,768 households. The median household income is $105,866, the median home value is $396,100 and the median gross rent is $1,487/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 Oct 26, 2026

Total population

32,105

Margin of error ±1,300

Median household income

$105,866

Margin of error ±$7,117

Median home value

$396,100

Margin of error ±$17,235

Median gross rent

$1,487/mo

Margin of error ±$69

Median age

43.1 yrs

Margin of error ±2.0 yrs

Mean travel time to work

33.7 min

Margin of error ±3.4 min

How ZIP 07840 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 0784043.1 yrsNew Jersey40.1 yrsUnited States38.9 yrs

Median household income

ZIP 07840$105,866New Jersey$103,556United States$80,734

Per capita income

ZIP 07840$53,709New Jersey$54,253United States$44,673

Poverty rate

ZIP 078406.4%New Jersey9.7%United States12.5%

Unemployment rate

ZIP 078407.3%New Jersey6.3%United States5.2%

Bachelor's degree or higher

ZIP 0784049.6%New Jersey43.6%United States35.7%

Median home value

ZIP 07840$396,100New Jersey$454,400United States$332,700

Median gross rent

ZIP 07840$1,487/moNew Jersey$1,720/moUnited States$1,413/mo

Owner-occupied homes

ZIP 0784069.7%New Jersey63.8%United States65.2%

Mean travel time to work

ZIP 0784033.7 minNew Jersey30.5 minUnited States26.4 min

Worked from home

ZIP 0784014.8%New Jersey16.8%United States15.1%

All figures for ZIP 07840

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 07840 — ACS 2020–2024 5-year estimates
Measure	ZIP 07840	Margin of error	New Jersey	United States
Total population	32,105	±1,300	9,343,809	334,922,499
Median age	43.1 yrs	±2.0 yrs	40.1 yrs	38.9 yrs
Households	12,768	±523	3,507,701	129,227,496
Median household income	$105,866	±$7,117	$103,556	$80,734
Per capita income	$53,709	±$3,819	$54,253	$44,673
Poverty rate	6.4%	±1.6 pts	9.7%	12.5%
Unemployment rate	7.3%	±2.2 pts	6.3%	5.2%
Bachelor's degree or higher	49.6%	±3.2 pts	43.6%	35.7%
Median home value	$396,100	±$17,235	$454,400	$332,700
Median gross rent	$1,487/mo	±$69	$1,720/mo	$1,413/mo
Owner-occupied homes	69.7%	±2.1 pts	63.8%	65.2%
Mean travel time to work	33.7 min	±3.4 min	30.5 min	26.4 min
Worked from home	14.8%	±2.7 pts	16.8%	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 07840
Group	ZIP 07840	New Jersey	United States
White alone, not Hispanic or Latino	68.2%	50.9%	57.4%
Black or African American alone, not Hispanic or Latino	5.6%	12.2%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.1%	0.5%
Asian alone, not Hispanic or Latino	5.9%	10.0%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.0%	0.2%
Some other race alone, not Hispanic or Latino	0.3%	0.8%	0.6%
Two or more races, not Hispanic or Latino	1.9%	3.5%	4.3%
Hispanic or Latino (of any race)	18.1%	22.5%	19.3%

Where ZIP 07840 is

State: New Jersey
Main county: Warren County— also overlaps Morris County
Largest overlapping place: Hackettstown (10% of the ZIP's land area)
Land area: 37.33 sq mi· about 860 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 Warren County

07823 Warren County, NJ 07825 Warren County, NJ 07832 Warren County, NJ 07833 Delaware, NJ 07838 Warren County, NJ 07844 Hope, NJ 07846 Johnsonburg, NJ 07863 Warren County, NJ 07865 Warren County, NJ 07880 Vienna, NJ 07882 Warren County, NJ 08865 Warren County, NJ 08886 Warren County, NJ

See every ZIP code in New Jersey, or compare ZIP 07840 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.