ZIP Code 14138 — South Dayton, NY
14138 is a standard (street delivery) ZIP code serving South Dayton, New York, in Cattaraugus 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 14138 at a glance
| ZIP code | 14138 |
|---|---|
| Primary city | South Dayton |
| State | New York (NY) |
| County | Cattaraugus FIPS 36009 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,046 |
| Coordinates | 42.374970, -79.053760 |
How ZIP+4 works in 14138
The four digits after the hyphen encode a delivery segment inside 14138. 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 14138 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 14138.
| ZIP | City | Distance |
|---|---|---|
| 14041 | Dayton, NY | 4.5 mi |
| 14723 | Cherry Creek, NY | 6.1 mi |
| 14062 | Forestville, NY | 6.8 mi |
| 14129 | Perrysburg, NY | 7.6 mi |
| 14070 | Gowanda, NY | 7.7 mi |
| 14726 | Conewango Valley, NY | 8.6 mi |
| 14719 | Cattaraugus, NY | 9.5 mi |
| 14168 | Versailles, NY | 10 mi |
| 14732 | Ellington, NY | 11.1 mi |
| 14136 | Silver Creek, NY | 11.8 mi |
| 14718 | Cassadaga, NY | 12.1 mi |
| 14135 | Sheridan, NY | 12.3 mi |
Questions about 14138
What is the ZIP+4 code for 14138?
14138 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 14138, you need to look up a specific street address to get them.
What city is 14138?
14138 is assigned to South Dayton, New York, in Cattaraugus 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.