ZIP Code · NJ

ZIP 07840

Part of Hackettstown, NJ

Pop. 32,105·Warren County·77th most expensive ZIP in New Jersey

Median rent (all units)

$2,663/mo

Year-over-Year

Stable

Month-over-Month

-0.6%

vs US Median

+$731

Reported rents

Falling (Monthly)

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Most AffordableMost Expensive

ZIP 07840 · $2,663

More expensive than 84% of US ZIP codes · National median $1,932/mo

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Medians by bedroom

Rent by unit size

Studio

$1,570

1 BR

$1,620

2 BR

$2,000

3 BR

$2,530

4 BR+

$2,930

Research median

$2,000/mo

Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).

Rent trends

12-month history

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Last updated: September 25, 2026

From the history

What the numbers show

What a typical income covers

30% of the median household income ($105,866) is $2,647 a month. That covers HUD's Fair Market Rent for up to a 3-bedroom ($2,530); a 4-bedroom is $2,930.

Cheaper nearby

ZIP 07828, 5 miles away, rents for 24% less ($2,022/mo), about $7,700 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 07840. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$31,956/yr

At $2,663/mo median

Location

CityHackettstown

StateNJ

CountyWarren County

Rent Market Meter

Balanced Market

Renter's MarketBalancedLandlord's Market

Rents are roughly steady, with neither renters nor landlords holding a strong edge right now.

Based on rent-price momentum (+0.0% YoY, -0.6% MoM), not inventory.

Demographics

Who lives here

ZIP 07840 (Hackettstown, NJ) is majority owner-occupied, has a median income above the national average, 49.6% of residents hold a bachelor's degree or higher.

Population

32,105

Median income

$105,866

Median age

43.1

Renters

30.3%

Age distribution

20%

19.7%

29.1%

13.5%

17.6%

Under 1820%

18–3419.7%

35–5429.1%

55–6413.5%

65+17.6%

Gender

48.9%

51.1%

Male48.9%

Female51.1%

Race & ethnicity

71%

18.1%

White71%

Black6%

Hispanic18.1%

Asian5.9%

Education (25+)

22.2%

24%

49.6%

No HS diploma4.2%

HS diploma22.2%

Some college24%

Bachelor's+49.6%

Housing tenure

69.7%

30.3%

Owner69.7%

Renter30.3%

Source: U.S. Census Bureau · ACS 2024 5-Year Estimates

2021 vs 2026

How ZIP 07840 in Hackettstown, NJ has changed in 5 years

Income

$97,544 → $105,866

up 8.5%

Population

31,581 → 32,105

up 1.7%

Renter share

30.2% → 30.3%

+0.1 pts

Bachelor's+

46.6% → 49.6%

+3.0 pts

Median age

42.4 → 43.1

+0.7 yrs

Local incomes tracked alongside that move, going from a median of $97,544 in 2021 to $105,866 more recently. The population has grown by 1.7% since 2021, moving from about 31,581 residents to roughly 32,105. College-educated residents now make up 49.6% of adults here, versus 46.6% in 2021.

Community

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Local insights

Tips for renters in ZIP 07840

About renting in ZIP 07840

Last updated: September 25, 2026

ZIP code 07840 covers Hackettstown, NJ. The median rent here is $2,663/mo as of September 2026. A 1-bedroom rents for a median of $1,620/mo. A 2-bedroom rents for a median of $2,000/mo.

At 30% of local median household income ($105,866/yr), ZIP 07840 ranks as moderate compared to the national benchmark of 30%. Rent prices have stayed steady over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 07840?

To keep rent at or below 30% of gross income, you would need to earn at least $107,000/year (about $51/hour full-time) to afford the median rent of $2,663/mo in ZIP 07840. The local median household income is $105,866/yr, so the typical household falls short of that bar.