08858 ZIP Code — Oldwick, NJ
Hunterdon County, New Jersey
ZIP code 08858 is located in Oldwick, New Jersey, within Hunterdon County. It covers approximately 2.63 square miles and serves a population of 0 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 908.
0
population
2.63
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
08858 ZIP code map
Cities in ZIP code 08858
Below are the cities the US Postal Service accepts for ZIP code 08858. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Oldwick | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 0 |
| Population density | 0 / sq mi |
| State FIPS | 34 |
| County FIPS | 019 |
| Geography | |
|---|---|
| Land area | 2.63 sq mi |
| Water area | 0.01 sq mi |
| Latitude | 40.6800 |
| Longitude | -74.7355 |
| Timezone | Eastern (ET) |
| Area code | 908 |
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 0.0% | 17.8% | 30.2% |
| $50k – $100k | 0.0% | 22.9% | 26.7% |
| $100k – $200k | 0.0% | 35.2% | 28.3% |
| Over $200k | 100.0% | 24.1% | 14.8% |