ZIP Code 08511 — Cookstown, NJ
08511 is a standard (street delivery) ZIP code serving Cookstown, New Jersey, in Burlington 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 08511 at a glance
| ZIP code | 08511 |
|---|---|
| Primary city | Cookstown |
| State | New Jersey (NJ) |
| County | Burlington FIPS 34005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 976 |
| Coordinates | 40.044410, -74.553840 |
How ZIP+4 works in 08511
The four digits after the hyphen encode a delivery segment inside 08511. 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 08511 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 08511.
| ZIP | City | Distance |
|---|---|---|
| 08641 | Joint Base Mdl, NJ | 2.1 mi |
| 08562 | Wrightstown, NJ | 2.7 mi |
| 08640 | Joint Base Mdl, NJ | 2.9 mi |
| 08533 | New Egypt, NJ | 4.9 mi |
| 08042 | Juliustown, NJ | 6.1 mi |
| 08041 | Jobstown, NJ | 6.8 mi |
| 08514 | Cream Ridge, NJ | 6.8 mi |
| 08515 | Chesterfield, NJ | 6.9 mi |
| 08015 | Browns Mills, NJ | 7.9 mi |
| 08064 | New Lisbon, NJ | 8 mi |
| 08501 | Allentown, NJ | 8 mi |
| 08022 | Columbus, NJ | 8.3 mi |
Questions about 08511
What is the ZIP+4 code for 08511?
08511 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 08511, you need to look up a specific street address to get them.
What city is 08511?
08511 is assigned to Cookstown, New Jersey, in Burlington 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.