ZIP Code 07823 — Belvidere, NJ
07823 is a standard (street delivery) ZIP code serving Belvidere, New Jersey, in Warren 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 07823 at a glance
| ZIP code | 07823 |
|---|---|
| Primary city | Belvidere |
| State | New Jersey (NJ) |
| County | Warren FIPS 34041 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 7,451 |
| Coordinates | 40.825890, -75.037810 |
How ZIP+4 works in 07823
The four digits after the hyphen encode a delivery segment inside 07823. 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 07823 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 07823.
| ZIP | City | Distance |
|---|---|---|
| 07863 | Oxford, NJ | 3.8 mi |
| 07833 | Delaware, NJ | 5 mi |
| 07882 | Washington, NJ | 5.3 mi |
| 18343 | Mount Bethel, PA | 5.7 mi |
| 07844 | Hope, NJ | 6.7 mi |
| 18013 | Bangor, PA | 7.2 mi |
| 18351 | Portland, PA | 7.5 mi |
| 07831 | Changewater, NJ | 7.6 mi |
| 07865 | Port Murray, NJ | 7.8 mi |
| 07838 | Great Meadows, NJ | 8 mi |
| 18063 | Martins Creek, PA | 8.1 mi |
| 07832 | Columbia, NJ | 8.5 mi |
Questions about 07823
What is the ZIP+4 code for 07823?
07823 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 07823, you need to look up a specific street address to get them.
What city is 07823?
07823 is assigned to Belvidere, New Jersey, in Warren 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.