ZIP code · Iselin · New Jersey · United States
ZIP code 08830 — Iselin
ZIP code 08830 serves Iselin, New Jersey.
- Postal code
- 08830Single source Value from one source, not cross-checked.
- City
- Iselin
- County
- Middlesex FIPS 34023
- State
- New Jersey
- Country
- United States
- Coordinates
- 40.5716, -74.3167 — precision precise (locality)
View on OpenStreetMap - Population
- 19,151 (ZCTA, ACS 5-year)
- Population density
- 6,056 / sq mi
- Land area
- 3.2 sq mi (8.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $112,615
- Per-capita income
- $46,000
- Median age
- 38.4
- Households
- 6,354
- Housing units
- 6,618
- Median home value
- $394,200
- Median gross rent
- $2,051 / month
- Congressional district
- NJ-6 (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 08830 with another ZIP · ZIPs within 25 miles · distance from 08830
Map of ZIP code 08830
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 24°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 41 | 44 | 53 | 66 | 75 | 84 | 88 | 86 | 79 | 66 | 56 | 46 |
| Avg low °F | 24 | 26 | 32 | 42 | 51 | 60 | 66 | 64 | 58 | 46 | 36 | 29 |
| Precip in | 3.8 | 3.1 | 4.3 | 3.6 | 4.0 | 4.3 | 5.3 | 4.0 | 4.3 | 4.3 | 3.5 | 4.2 |
NOAA 1991–2020 climate normals from the nearest station: PLAINFIELD (5.0 mi) · NOAA NCEI
Places in ZIP 08830
- 2 schools
- 1 hospitals & clinics
- 1 doctors & dentists
- 5 supermarkets
- 12 restaurants & cafés
- 2 parks
- 8 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 2 post offices
- 4 places of worship
- 2 banks
- 6 gas stations
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page