ZIP Code 07438 — Oak Ridge, NJ
07438 is a standard (street delivery) ZIP code serving Oak Ridge, New Jersey, in Morris County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 07438 at a glance
| ZIP code | 07438 |
|---|---|
| Primary city | Oak Ridge |
| State | New Jersey (NJ) |
| County | Morris FIPS 34027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 11,160 |
| Coordinates | 41.028700, -74.520380 |
How ZIP+4 works in 07438
The four digits after the hyphen encode a delivery segment inside 07438. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 07438 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 07438.
| ZIP | City | Distance |
|---|---|---|
| 07435 | Newfoundland, NJ | 4.2 mi |
| 07439 | Ogdensburg, NJ | 5.2 mi |
| 07866 | Rockaway, NJ | 5.5 mi |
| 07871 | Sparta, NJ | 5.7 mi |
| 07842 | Hibernia, NJ | 5.9 mi |
| 07460 | Stockholm, NJ | 6.1 mi |
| 07849 | Lake Hopatcong, NJ | 6.3 mi |
| 07416 | Franklin, NJ | 6.6 mi |
| 07801 | Dover, NJ | 6.8 mi |
| 07885 | Wharton, NJ | 7.3 mi |
| 07405 | Butler, NJ | 7.7 mi |
| 07480 | West Milford, NJ | 8.4 mi |
Questions about 07438
What is the ZIP+4 code for 07438?
07438 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 07438, you need to look up a specific street address to get them.
What city is 07438?
07438 is assigned to Oak Ridge, New Jersey, in Morris County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.