ZIP Code 12435 — Greenfield Park, NY
12435 is a standard (street delivery) ZIP code serving Greenfield Park, New York, in Ulster 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 12435 at a glance
| ZIP code | 12435 |
|---|---|
| Primary city | Greenfield Park |
| State | New York (NY) |
| County | Ulster FIPS 36111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 209 |
| Coordinates | 41.727150, -74.511480 |
How ZIP+4 works in 12435
The four digits after the hyphen encode a delivery segment inside 12435. 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 12435 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 12435.
| ZIP | City | Distance |
|---|---|---|
| 12763 | Mountain Dale, NY | 3.1 mi |
| 12789 | Woodridge, NY | 3.3 mi |
| 12428 | Ellenville, NY | 3.4 mi |
| 12733 | Fallsburg, NY | 5.1 mi |
| 12769 | Phillipsport, NY | 5.1 mi |
| 12483 | Spring Glen, NY | 5.4 mi |
| 12738 | Glen Wild, NY | 6.2 mi |
| 12788 | Woodbourne, NY | 6.2 mi |
| 12779 | South Fallsburg, NY | 6.3 mi |
| 12784 | Thompsonville, NY | 6.7 mi |
| 12420 | Cragsmoor, NY | 7.8 mi |
| 12781 | Summitville, NY | 8 mi |
Questions about 12435
What is the ZIP+4 code for 12435?
12435 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 12435, you need to look up a specific street address to get them.
What city is 12435?
12435 is assigned to Greenfield Park, New York, in Ulster 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.