ZIP Code 16321 — East Hickory, PA
16321 is a standard (street delivery) ZIP code serving East Hickory, Pennsylvania, in Forest 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 16321 at a glance
| ZIP code | 16321 |
|---|---|
| Primary city | East Hickory |
| State | Pennsylvania (PA) |
| County | Forest FIPS 42053 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 11 |
| Coordinates | 41.568350, -79.400840 |
How ZIP+4 works in 16321
The four digits after the hyphen encode a delivery segment inside 16321. 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 16321 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 16321.
| ZIP | City | Distance |
|---|---|---|
| 16370 | West Hickory, PA | 2.4 mi |
| 16322 | Endeavor, PA | 2.7 mi |
| 16353 | Tionesta, PA | 5.2 mi |
| 16341 | Pleasantville, PA | 7.6 mi |
| 16351 | Tidioute, PA | 7.6 mi |
| 16420 | Grand Valley, PA | 11.5 mi |
| 16220 | Crown, PA | 12.5 mi |
| 16361 | Tylersburg, PA | 12.9 mi |
| 16326 | Fryburg, PA | 14 mi |
| 16260 | Vowinckel, PA | 14 mi |
| 16332 | Lickingville, PA | 14.4 mi |
| 16239 | Marienville, PA | 14.9 mi |
Questions about 16321
What is the ZIP+4 code for 16321?
16321 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 16321, you need to look up a specific street address to get them.
What city is 16321?
16321 is assigned to East Hickory, Pennsylvania, in Forest 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.