ZIP Code 07820 — Allamuchy, NJ
07820 is a standard (street delivery) ZIP code serving Allamuchy, 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 07820 at a glance
| ZIP code | 07820 |
|---|---|
| Primary city | Allamuchy |
| State | New Jersey (NJ) |
| County | Warren FIPS 34041 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Coordinates | 40.931040, -74.804240 |
How ZIP+4 works in 07820
The four digits after the hyphen encode a delivery segment inside 07820. 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 07820 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 07820.
| ZIP | City | Distance |
|---|---|---|
| 07821 | Andover, NJ | 3.7 mi |
| 07828 | Budd Lake, NJ | 4.1 mi |
| 07846 | Johnsonburg, NJ | 4.5 mi |
| 07874 | Stanhope, NJ | 4.9 mi |
| 07840 | Hackettstown, NJ | 5.1 mi |
| 07880 | Vienna, NJ | 5.8 mi |
| 07857 | Netcong, NJ | 5.9 mi |
| 07838 | Great Meadows, NJ | 6.2 mi |
| 07850 | Landing, NJ | 7.6 mi |
| 07843 | Hopatcong, NJ | 7.6 mi |
| 07852 | Ledgewood, NJ | 7.9 mi |
| 07836 | Flanders, NJ | 7.9 mi |
Questions about 07820
What is the ZIP+4 code for 07820?
07820 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 07820, you need to look up a specific street address to get them.
What city is 07820?
07820 is assigned to Allamuchy, 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.