ZIP Code 16365 — Warren, PA
16365 is a standard (street delivery) ZIP code serving Warren, Pennsylvania, 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 16365 at a glance
| ZIP code | 16365 |
|---|---|
| Primary city | Warren |
| State | Pennsylvania (PA) |
| County | Warren FIPS 42123 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 17,292 |
| Coordinates | 41.839430, -79.153240 |
How ZIP+4 works in 16365
The four digits after the hyphen encode a delivery segment inside 16365. 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 16365 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 16365.
| ZIP | City | Distance |
|---|---|---|
| 16329 | Irvine, PA | 6.7 mi |
| 16352 | Tiona, PA | 7.8 mi |
| 16313 | Clarendon, PA | 8.1 mi |
| 16345 | Russell, PA | 8.7 mi |
| 16371 | Youngsville, PA | 8.7 mi |
| 16312 | Chandlers Valley, PA | 10 mi |
| 16350 | Sugar Grove, PA | 12.6 mi |
| 16333 | Ludlow, PA | 13 mi |
| 16340 | Pittsfield, PA | 13.9 mi |
| 16347 | Sheffield, PA | 14.1 mi |
| 14738 | Frewsburg, NY | 15 mi |
| 16351 | Tidioute, PA | 16 mi |
Questions about 16365
What is the ZIP+4 code for 16365?
16365 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 16365, you need to look up a specific street address to get them.
What city is 16365?
16365 is assigned to Warren, Pennsylvania, 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.