ZIP Code 12423 — East Durham, NY
12423 is a standard (street delivery) ZIP code serving East Durham, New York, in Greene 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 12423 at a glance
| ZIP code | 12423 |
|---|---|
| Primary city | East Durham |
| State | New York (NY) |
| County | Greene FIPS 36039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 970 |
| Coordinates | 42.379680, -74.111360 |
How ZIP+4 works in 12423
The four digits after the hyphen encode a delivery segment inside 12423. 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 12423 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 12423.
| ZIP | City | Distance |
|---|---|---|
| 12418 | Cornwallville, NY | 2.9 mi |
| 12460 | Oak Hill, NY | 4.1 mi |
| 12405 | Acra, NY | 4.4 mi |
| 12422 | Durham, NY | 4.7 mi |
| 12431 | Freehold, NY | 5 mi |
| 12083 | Greenville, NY | 5.4 mi |
| 12120 | Medusa, NY | 5.6 mi |
| 12413 | Cairo, NY | 6.3 mi |
| 12454 | Maplecrest, NY | 6.7 mi |
| 12439 | Hensonville, NY | 6.9 mi |
| 12176 | Surprise, NY | 7.3 mi |
| 12470 | Purling, NY | 8.1 mi |
Questions about 12423
What is the ZIP+4 code for 12423?
12423 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 12423, you need to look up a specific street address to get them.
What city is 12423?
12423 is assigned to East Durham, New York, in Greene 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.