Residential delivery area · New Jersey
ZIP Code 08830: Iselin, NJ
ZIP code 08830 is in Iselin, New Jersey, entirely in Middlesex County (Census 2020 ZIP-county file). About 20,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $109,500 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Iselin · its only residential ZIP
- County
- Middlesex County
- Census places
- Iselin census-designated place
- Metro area
- New York-Newark-Jersey City, NY-NJ
- House district
- NJ-6 119th Congress
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 3.2 sq mi · 6,183 people per sq mi
Where is ZIP code 08830?
08830 centers on 40.570°, -74.316° and covers 3.2 square miles of land plus 0.0 of water. It borders 7 ZIP codes: 07067, 07095, 08863, 07001, 08820, 08840, 08837.
The map draws ZIP code areas only. For the streets inside 08830, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 08830 compare with the rest of Middlesex County?
| Measure | 08830 | In Middlesex County | In NJ |
|---|---|---|---|
| People (ACS 2020-2024) | 19,551 | 20th of 42 | 177th of 598 |
| Median household income | $110k | 22nd of 40 | 257th of 476 |
| Median home value | $427k | 29th of 40 | 308th of 515 |
Its median household income is higher than in 86% of U.S. residential ZIP codes, and it is denser than 95% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 08830?
The 2020 Census counted 20,088 people in 08830; the ACS, which samples households over 2020-2024, estimates 19,551. Between the 2010 and 2020 censuses its population grew 8.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 19,551
- 2020 Census count
- 20,088+8.8% since 2010 (18,459)
- Households
- 6,512
- Median age
- 38.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 08830?
Of the 19,551 people the ACS estimates in 08830, 20.8% are under 18 and 16.1% are 65 or older. The largest group by race and Hispanic origin is Asian (not Hispanic) (48.3%), then White (not Hispanic) (23.1%).
- Under 1820.8%
- 18 to 6463.1%
- 65 and older16.1%
- Asian, not Hispanic48.3%
- White, not Hispanic23.1%
- Hispanic or Latino14.8%
- Black, not Hispanic10.8%
- Other or two or more3.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 08830 earn?
Median household income is $109,500 (ACS 2020-2024), the 22nd highest of the 40 ranked ZIP codes in Middlesex County. It is not measurably different from 2015-2019 ($117,092 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $109,500±$12,970
- Income per person
- $45,254
- Below the poverty line
- 7.9%
- Unemployed (of the labor force)
- 3.9%
- Adults 25+ with a bachelor's degree
- 53.7%
- Adjusted gross income per tax return, 2022
- $101,4499,860 returns; wages 73% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 08830?
FHFA's house price index for 08830, built from repeat sales and appraisals of the same homes, rose 98% from 2015 to 2025 and rose 64% from 2020 to 2025, and moved +4.6% in 2025.
- Median home value (owners' estimate)
- $426,800
- Median gross rent
- $2,113
- Homes owned by their occupants
- 65.3%
- Housing units
- 6,738
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 08830?
789 business establishments had a location in this ZIP code in 2023, 12 fewer than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services262
- Retail trade85
- Finance and insurance67
- Accommodation and food services59
- Health care and social assistance46
- Other services (except public administration)45
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 08830?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 07067 | Colonia | 18,587 | $123k | 1.4 mi |
| 07095 | Woodbridge | 20,756 | $105k | 2.0 mi |
| 08863 | Fords | 12,771 | $116k | 2.3 mi |
| 07001 | Avenel | 17,121 | $102k | 2.6 mi |
| 08820 | Edison | 39,978 | $171k | 2.6 mi |
| 08840 | Metuchen | 18,206 | $147k | 2.9 mi |
| 08837 | Edison | 19,437 | $103k | 4.1 mi |
| 07065 | Rahway | 30,109 | $92k | 3.2 mi (near) |
| 07077 | Sewaren | 3,248 | $109k | 3.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.