ZIP Code 13318 — Cassville, NY
13318 is a standard (street delivery) ZIP code serving Cassville, New York, in Oneida 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 13318 at a glance
| ZIP code | 13318 |
|---|---|
| Primary city | Cassville |
| State | New York (NY) |
| County | Oneida FIPS 36065 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 896 |
| Coordinates | 42.923660, -75.259580 |
How ZIP+4 works in 13318
The four digits after the hyphen encode a delivery segment inside 13318. 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 13318 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 13318.
| ZIP | City | Distance |
|---|---|---|
| 13313 | Bridgewater, NY | 2.5 mi |
| 13322 | Clayville, NY | 4.1 mi |
| 13456 | Sauquoit, NY | 5.4 mi |
| 13480 | Waterville, NY | 5.5 mi |
| 13455 | Sangerfield, NY | 5.9 mi |
| 13491 | West Winfield, NY | 6.1 mi |
| 13319 | Chadwicks, NY | 7.1 mi |
| 13314 | Brookfield, NY | 7.4 mi |
| 13418 | North Brookfield, NY | 8.2 mi |
| 13364 | Leonardsville, NY | 8.2 mi |
| 13413 | New Hartford, NY | 9.3 mi |
| 13328 | Deansboro, NY | 9.4 mi |
Questions about 13318
What is the ZIP+4 code for 13318?
13318 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 13318, you need to look up a specific street address to get them.
What city is 13318?
13318 is assigned to Cassville, New York, in Oneida 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.