ZIP code · Rosemont · New Jersey · United States
ZIP code 08556 — Rosemont
ZIP code 08556 serves Rosemont, New Jersey.
- Postal code
- 08556Single source Value from one source, not cross-checked.
- City
- Rosemont
- County
- Hunterdon
- State
- New Jersey
- Country
- United States
- Coordinates
- 40.4200, -74.9886 — precision precise (locality)
View on OpenStreetMap - Time zone
- America/New_York (UTC−5 / UTC−4 DST)
- Area code
- 609 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 08556 with another ZIP · ZIPs within 25 miles · distance from 08556
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 19°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 42 | 44 | 52 | 64 | 74 | 83 | 88 | 87 | 80 | 68 | 56 | 46 |
| Avg low °F | 19 | 22 | 29 | 39 | 49 | 58 | 64 | 61 | 54 | 40 | 32 | 25 |
| Precip in | 3.6 | 2.9 | 4.3 | 3.8 | 4.3 | 4.8 | 5.1 | 4.7 | 4.4 | 4.3 | 3.5 | 4.6 |
NOAA 1991–2020 climate normals from the nearest station: LAMBERTVILLE (4.8 mi) · NOAA NCEI
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 · NOAA NCEI. Data generated on 2026-08-21. Methodology · Report an error on this page