07840 ZIP Code — Hackettstown, NJ

Warren County, New Jersey

ZIP code 07840 is located in Hackettstown, New Jersey, within Warren County. It covers approximately 37.33 square miles and serves a population of 32,952 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 908.

About ZIP code 07840

The housing stock consists of a mix of housing types. Most homes were built in the 1980s, giving the area an established character. Median home value is $353,500. Owner-occupancy sits near the national average at 71%.

Median household income is $104,664. The poverty rate of 5% is below the national average. 31% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 34 minutes is near the national average.

Educational attainment is high — 48% of residents hold a bachelor's degree or higher, well above the national average of 33%.

32,952

population

37.33

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

07840 ZIP code map

Cities in ZIP code 07840

Below are the cities the US Postal Service accepts for ZIP code 07840. Using any city not on this list may result in mail delivery delays.

City	Status
Hackettstown	Acceptable
Hackettstown	Preferred

Nearby ZIP codes

07828 Budd Lake (3.6 mi) 07838 Great Meadows (5.2 mi) 07853 Long Valley (5.7 mi) 07836 Flanders (6.4 mi) 07865 Port Murray (6.8 mi) 07857 Netcong (6.9 mi) 07874 Stanhope (6.9 mi) 07821 Andover (7.6 mi) 07863 Oxford (8.1 mi) 07852 Ledgewood (8.5 mi) 07850 Landing (8.7 mi) 07876 Succasunna (8.9 mi)

Demographics updated 05/2026

Population
Total population	32,952
Population density	883 / sq mi
State FIPS	34
County FIPS	041

Geography
Land area	37.33 sq mi
Water area	0.42 sq mi
Latitude	40.8650
Longitude	-74.8227
Timezone	Eastern (ET)
Area code	908

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	24.9%	28.4%	30.2%
$50k – $100k	29.0%	30.6%	26.7%
$100k – $200k	34.4%	31.1%	28.3%
Over $200k	11.7%	9.9%	14.8%

Demographics & statistics

32,952

Population

883

People per sq mi

42.6

Median age

$104,664

Median household income

$51,224

Per capita income

$353,500

Median home value

$1,417

Median monthly rent

70.9%

Home ownership

5.2%

Poverty rate

6.9%

Unemployment

9,273

Housing units

48.2%

Bachelor's or higher

Age distribution

Male Female

706

Under 5

770

878

5–9

957

995

10–14

1,083

1,261

15–19

1,374

938

20–24

1,022

1,587

25–34

1,728

1,893

35–44

2,063

2,494

45–54

2,716

983

55–59

1,070

1,202

60–64

1,309

1,510

65–74

1,645

872

75–84

950

453

85+

493

← Male

Female →

Age summary

Group	Count	%
Under 18	6,869	20.8%
18 and over	26,083	79.2%
65 and over	5,923	18.0%
Median age	42.6 years

Race & ethnicity

White 70.1%

Hispanic or Latino 7.9%

Asian 6.4%

Black or African American 6.4%

Two or more races 6.1%

Other race 3%

American Indian / Alaska Native 0.1%

Group	Count	%
White	25,100	70.1%
Hispanic or Latino	2,837	7.9%
Asian	2,291	6.4%
Black or African American	2,274	6.4%
Two or more races	2,182	6.1%
Other race	1,085	3%
American Indian / Alaska Native	20	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	24.9%	28.4%	30.2%
$50k – $100k	29.0%	30.6%	26.7%
$100k – $200k	34.4%	31.1%	28.3%
Over $200k	11.7%	9.9%	14.8%

Under $10k 2.7%

$10k–$15k 2.4%

$15k–$25k 4.0%

$25k–$35k 5.1%

$35k–$50k 6.6%

$50k–$75k 14.5%

$75k–$100k 12.6%

$100k–$150k 22.3%

$150k–$200k 14.5%

$200k+ 15.3%

Range	% of households
Under $10k	2.7%
$10k–$15k	2.4%
$15k–$25k	4.0%
$25k–$35k	5.1%
$35k–$50k	6.6%
$50k–$75k	14.5%
$75k–$100k	12.6%
$100k–$150k	22.3%
$150k–$200k	14.5%
$200k+	15.3%
Median income	$104,664

Housing

Home values

Under $50k 2.5%

$50k–$100k 0.5%

$100k–$150k 2.7%

$150k–$200k 4.4%

$200k–$300k 26.2%

$300k–$500k 47.8%

$500k–$1M 14.9%

$1M+ 0.8%

Housing overview

Metric	Value
Median home value	$353,500
Median rent / month	$1,417
Owner occupied	70.9%
Renter occupied	29.1%
Vacant	1.6%
Single-family detached	52.9%
Large apartment buildings	6.4%
Mobile homes	0.5%
Median rooms	6.2
Avg household size (owned)	2.66

Year built

Era	%
2020 or later	0.1%
2010–2019	4.1%
2000–2009	14.1%
1990–1999	16.4%
1980–1989	20.1%
1970–1979	12.5%
1960–1969	13.8%
1950–1959	8.1%
1940–1949	3.4%
1939 or earlier	7.4%

Bedrooms

Size	% of units
No bedroom (studio)	2.8%
1 bedroom	17.0%
2 bedrooms	22.8%
3 bedrooms	27.1%
4 bedrooms	26.5%
5+ bedrooms	3.8%

Vehicles per household

Vehicles	% of households
No vehicle	4.9%
1 vehicle	29.9%
2 vehicles	43.0%
3 or more	22.2%

Heating fuel

Fuel type	%
Utility gas	68.4%
Electricity	13.7%
Propane / LP gas	2.0%
Fuel oil	15.2%
Wood	0.3%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	6,862	53.7%
Cohabiting couple	755	5.9%
Male householder, no spouse	2,035	15.9%
Female householder, no spouse	3,138	24.5%
Households with children under 18	4,150	32.4%
Households with seniors (65+)	4,270	33.4%
Average household size	2.50

Marital status

Status	Male	Female
Never married	29.9%	29.5%
Married	55.0%	50.6%
Separated	1.3%	0.7%
Widowed	3.6%	6.4%
Divorced	10.3%	12.8%

Education

Less than 9th grade 1.9%

Some HS, no diploma 2.7%

HS graduate 23.4%

Some college, no degree 15.8%

Associate's degree 7.9%

Bachelor's degree 32.0%

Graduate / professional 16.2%

Metric	%
HS diploma or higher	95.4%
Bachelor's or higher	48.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	518	5.8%
Kindergarten	128	1.4%
Elementary school	3,469	39.0%
High school	1,920	21.6%
College / grad school	2,852	32.1%

Employment

Industry of employment

Education & healthcare 23.1%

Professional & management 15.2%

Manufacturing 11.1%

Retail trade 10.0%

Arts, food & hospitality 9.5%

Finance & real estate 7.3%

Public administration 6.0%

Other services 4.0%

Construction 3.9%

Transportation & utilities 3.9%

Information 3.0%

Wholesale trade 2.8%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	47.6%
Service	17.2%
Sales & office	21.0%
Natural resources & construction	5.5%
Production & transportation	8.7%

Employment type

Type	%
Private sector	79.0%
Government	16.0%
Self-employed	4.8%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	76.4%
Carpool	8.7%
Public transit	0.9%
Walk	1.8%
Work from home	10.4%
Other means	1.8%
Avg commute (minutes)	33.8

Poverty

All people 5.2%

Under 18 years 5.2%

18 and over 5.2%

Married-couple families 1.8%

Female-led households 4.5%

Income support

Source	% of households
Social Security	30.8%
Retirement income	28.7%
Supplemental Security	4.0%
Cash public assistance	4.3%
Food stamps / SNAP	3.1%

Health indicators

Condition	%
Obesity	27.4%
High blood pressure	0.0%
High cholesterol	0.0%
Diabetes	7.8%
Heart disease	5.3%
Stroke	2.4%
Asthma	9.1%
Arthritis	19.9%
Kidney disease	2.4%
Pulmonary disease	5.1%
Cancer	6.6%

Behavior / access	%
Smoking	12.7%
Binge drinking	18.1%
No physical activity	18.6%
Less than 7 hrs sleep	29.7%
Depression	17.9%
Fair or poor health	10.0%
Poor mental health	13.4%
Poor physical health	8.0%
No health insurance	11.7%
Visited doctor (checkup)	74.3%
Visited dentist	69.2%
Cholesterol screening	0.0%
Teeth loss	9.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,244	4.8%

Disability	%
Any disability	10.1%
Under 18	4.8%
18–64 years	7.1%
65 and over	27.0%

Health insurance coverage

Type	%
Private insurance	83.1%
Public insurance	27.7%
No insurance	5.4%
Uninsured under 19	5.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	31,476	95.5%
Spanish	2,264	7.2%
Other Indo-European	1,219	3.9%
Asian & Pacific Islander	608	1.9%
Other languages	286	0.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	27,617	83.8%
Born in same state	26,746	81.2%
Born in different state	19,180	58.2%
Foreign born	871	2.6%
Naturalized citizen	5,335	16.2%
Not a US citizen	3,305	61.9%

Ancestry

Ancestry	Count	%
Italian	5,950	18.1%
French	2,101	6.4%
Arab	1,290	3.9%
English	492	1.5%
Irish	321	1%

Ancestry	Count	%
Norwegian	289	0.9%
Polish	226	0.7%
German	52	0.2%
Dutch	35	0.1%

Technology access

Metric	% of households
Computer access	38.8%
Internet access	92.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 07840

What city is ZIP code 07840 in?

ZIP code 07840 is primarily assigned to Hackettstown, New Jersey.

What county is ZIP code 07840 in?

ZIP code 07840 falls within Warren County, New Jersey.

How educated is the population of ZIP code 07840?

48% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the typical home value in ZIP code 07840?

The median home value in ZIP code 07840 is $353,500.

What is the median household income in ZIP code 07840?

The median household income in ZIP code 07840 is $104,664, above the national median of ~$75,000.

What is the population of ZIP code 07840?

ZIP code 07840 has an estimated population of 32,952 residents, with a density of 883 people per square mile.

What timezone is ZIP code 07840 in?

ZIP code 07840 observes the EST timezone.