ZIP Code · NJ

ZIP 08830

Part of Iselin, NJ

Pop. 19,551·Middlesex County·87th most expensive ZIP in New Jersey

Median rent (all units)

$2,631/mo

Year-over-Year

-0.8%

Month-over-Month

-1.1%

vs US Median

+$699

Reported rents

Falling (Monthly)

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Most AffordableMost Expensive

ZIP 08830 · $2,631

More expensive than 83% of US ZIP codes · National median $1,932/mo

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Medians by bedroom

Rent by unit size

Studio

$2,010

1 BR

$2,200

2 BR

$2,770

3 BR

$3,320

4 BR+

$3,670

Research median

$2,770/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: October 17, 2026

From the history

What the numbers show

Past year vs. the rest of New Jersey

Rent in ZIP 08830 changed -0.8% over the year to September 2026. Across the 149 New Jersey ZIP codes Zillow tracks, the typical change was +2.8%.

Recent direction

Rent rose in 5 of the last 12 months.

What a typical income covers

30% of the median household income ($109,500) is $2,738 a month. That covers HUD's Fair Market Rent for up to a 1-bedroom ($2,200); a 2-bedroom is $2,770.

Cheaper nearby

ZIP 10309, 6 miles away, rents for 19% less ($2,121/mo), about $6,100 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 08830. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$31,572/yr

At $2,631/mo median

Location

CityIselin

StateNJ

CountyMiddlesex County

Rent Market Meter

Renter's Market

Renter's MarketBalancedLandlord's Market

Rents are softening (down 0.8% YoY), so renters have negotiating leverage.

Based on rent-price momentum (-0.8% YoY, -1.1% MoM), not inventory.

Demographics

Who lives here

ZIP 08830 (Iselin, NJ) is majority owner-occupied, has a median income above the national average, 53.7% of residents hold a bachelor's degree or higher.

Population

19,551

Median income

$109,500

Median age

38.5

Renters

34.7%

Age distribution

20.8%

23.4%

26.1%

13.5%

16.1%

Under 1820.8%

18–3423.4%

35–5426.1%

55–6413.5%

65+16.1%

Gender

50.1%

49.9%

Male50.1%

Female49.9%

Race & ethnicity

25.4%

14.8%

48.5%

White25.4%

Black10.8%

Hispanic14.8%

Asian48.5%

Other0.5%

Education (25+)

19%

17.6%

53.7%

No HS diploma9.6%

HS diploma19%

Some college17.6%

Bachelor's+53.7%

Housing tenure

65.3%

34.7%

Owner65.3%

Renter34.7%

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

2021 vs 2026

How ZIP 08830 in Iselin, NJ has changed in 5 years

Income

$103,179 → $109,500

up 6.1%

Population

17,684 → 19,551

up 10.6%

Renter share

29% → 34.7%

+5.7 pts

Bachelor's+

52.8% → 53.7%

+0.9 pts

Median age

42.8 → 38.5

-4.3 yrs

On the earnings side, the typical household in ZIP 08830 in Iselin, NJ now reports about $109,500, up from $103,179 in 2021. Headcount in the area went from 17,684 to 19,551 between 2021 and 2024, a 10.6% change. About 34.7% of households rent today, against 29% in 2021.

Community

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Local insights

Tips for renters in ZIP 08830

About renting in ZIP 08830

Last updated: October 17, 2026

ZIP code 08830 covers Iselin, NJ. The median rent here is $2,631/mo as of October 2026. A 1-bedroom rents for a median of $2,200/mo. A 2-bedroom rents for a median of $2,770/mo.

At 29% of local median household income ($109,500/yr), ZIP 08830 ranks as affordable compared to the national benchmark of 30%. Rents have decreased 0.8% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 08830?

To keep rent at or below 30% of gross income, you would need to earn at least $105,000/year (about $50/hour full-time) to afford the median rent of $2,631/mo in ZIP 08830. The local median household income is $109,500/yr, so the typical household meets that bar.

Is rent going up or down in ZIP 08830?

Rent in ZIP 08830 has fallen 0.8% over the past year.

How does ZIP 08830 compare to other ZIPs in New Jersey?

ZIP 08830 is in the middle among New Jersey ZIP codes for rent, ranking #87 of 209 at $2,631/mo. Over the year to September 2026, rent in ZIP 08830 changed -0.8%, against a typical +2.8% across the 149 New Jersey ZIP codes Zillow tracks.