ZIP Code 13780 — Guilford, NY
13780 is a standard (street delivery) ZIP code serving Guilford, New York, in Chenango 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 13780 at a glance
| ZIP code | 13780 |
|---|---|
| Primary city | Guilford |
| State | New York (NY) |
| County | Chenango FIPS 36017 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 968 |
| Coordinates | 42.424960, -75.481280 |
How ZIP+4 works in 13780
The four digits after the hyphen encode a delivery segment inside 13780. 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 13780 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 13780.
| ZIP | City | Distance |
|---|---|---|
| 13809 | Mount Upton, NY | 4.7 mi |
| 13830 | Oxford, NY | 7.6 mi |
| 13776 | Gilbertsville, NY | 8.1 mi |
| 13733 | Bainbridge, NY | 8.3 mi |
| 13815 | Norwich, NY | 8.8 mi |
| 13843 | South New Berlin, NY | 9.3 mi |
| 13849 | Unadilla, NY | 10.4 mi |
| 13838 | Sidney, NY | 10.6 mi |
| 13859 | Wells Bridge, NY | 12.4 mi |
| 13814 | North Norwich, NY | 13.4 mi |
| 13808 | Morris, NY | 13.5 mi |
| 13730 | Afton, NY | 13.6 mi |
Questions about 13780
What is the ZIP+4 code for 13780?
13780 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 13780, you need to look up a specific street address to get them.
What city is 13780?
13780 is assigned to Guilford, New York, in Chenango 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.