ZIP Code 13121 — New Haven, NY
13121 is a standard (street delivery) ZIP code serving New Haven, New York, in Oswego 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 13121 at a glance
| ZIP code | 13121 |
|---|---|
| Primary city | New Haven |
| State | New York (NY) |
| County | Oswego FIPS 36075 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Coordinates | 43.484910, -76.309660 |
How ZIP+4 works in 13121
The four digits after the hyphen encode a delivery segment inside 13121. 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 13121 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 13121.
| ZIP | City | Distance |
|---|---|---|
| 13114 | Mexico, NY | 3.6 mi |
| 13126 | Oswego, NY | 8.4 mi |
| 13142 | Pulaski, NY | 10.1 mi |
| 13115 | Minetto, NY | 10.4 mi |
| 13069 | Fulton, NY | 11.2 mi |
| 13131 | Parish, NY | 11.6 mi |
| 13076 | Hastings, NY | 12 mi |
| 13036 | Central Square, NY | 13.1 mi |
| 13145 | Sandy Creek, NY | 14.8 mi |
| 13103 | Mallory, NY | 15 mi |
| 13132 | Pennellville, NY | 15.5 mi |
| 13135 | Phoenix, NY | 15.7 mi |
Questions about 13121
What is the ZIP+4 code for 13121?
13121 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 13121, you need to look up a specific street address to get them.
What city is 13121?
13121 is assigned to New Haven, New York, in Oswego 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.