ZIP Code 13431 — Poland, NY
13431 is a standard (street delivery) ZIP code serving Poland, New York, in Herkimer 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 13431 at a glance
| ZIP code | 13431 |
|---|---|
| Primary city | Poland |
| State | New York (NY) |
| County | Herkimer FIPS 36043 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,847 |
| Coordinates | 43.206910, -75.076080 |
How ZIP+4 works in 13431
The four digits after the hyphen encode a delivery segment inside 13431. 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 13431 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 13431.
| ZIP | City | Distance |
|---|---|---|
| 13304 | Barneveld, NY | 4.7 mi |
| 13416 | Newport, NY | 6.1 mi |
| 13502 | Utica, NY | 6.4 mi |
| 13352 | Hinckley, NY | 7.5 mi |
| 13435 | Prospect, NY | 7.6 mi |
| 13406 | Middleville, NY | 8.9 mi |
| 13403 | Marcy, NY | 10.2 mi |
| 13324 | Cold Brook, NY | 10.4 mi |
| 13354 | Holland Patent, NY | 10.7 mi |
| 13350 | Herkimer, NY | 10.8 mi |
| 13438 | Remsen, NY | 10.8 mi |
| 13340 | Frankfort, NY | 11.1 mi |
Questions about 13431
What is the ZIP+4 code for 13431?
13431 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 13431, you need to look up a specific street address to get them.
What city is 13431?
13431 is assigned to Poland, New York, in Herkimer 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.