ZIP Code 13420 — Old Forge, NY
13420 is a standard (street delivery) ZIP code serving Old Forge, 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 13420 at a glance
| ZIP code | 13420 |
|---|---|
| Primary city | Old Forge |
| State | New York (NY) |
| County | Herkimer FIPS 36043 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,055 |
| Coordinates | 43.650690, -74.961900 |
How ZIP+4 works in 13420
The four digits after the hyphen encode a delivery segment inside 13420. 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 13420 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 13420.
| ZIP | City | Distance |
|---|---|---|
| 13472 | Thendara, NY | 5.8 mi |
| 13338 | Forestport, NY | 10.6 mi |
| 13331 | Eagle Bay, NY | 11.5 mi |
| 13494 | Woodgate, NY | 12.2 mi |
| 13360 | Inlet, NY | 12.4 mi |
| 13312 | Brantingham, NY | 12.8 mi |
| 13433 | Port Leyden, NY | 14.7 mi |
| 13353 | Hoffmeister, NY | 17 mi |
| 13436 | Raquette Lake, NY | 18 mi |
| 13368 | Lyons Falls, NY | 18.5 mi |
| 13345 | Greig, NY | 18.6 mi |
| 13343 | Glenfield, NY | 18.8 mi |
Questions about 13420
What is the ZIP+4 code for 13420?
13420 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 13420, you need to look up a specific street address to get them.
What city is 13420?
13420 is assigned to Old Forge, 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.