ZIP Code 12529 — Hillsdale, NY
12529 is a standard (street delivery) ZIP code serving Hillsdale, New York, in Columbia 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 12529 at a glance
| ZIP code | 12529 |
|---|---|
| Primary city | Hillsdale |
| State | New York (NY) |
| County | Columbia FIPS 36021 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,410 |
| Coordinates | 42.213350, -73.538020 |
How ZIP+4 works in 12529
The four digits after the hyphen encode a delivery segment inside 12529. 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 12529 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 12529.
| ZIP | City | Distance |
|---|---|---|
| 12517 | Copake Falls, NY | 5.7 mi |
| 12565 | Philmont, NY | 6 mi |
| 12521 | Craryville, NY | 6.5 mi |
| 12165 | Spencertown, NY | 7.2 mi |
| 12544 | Mellenville, NY | 7.4 mi |
| 12516 | Copake, NY | 7.4 mi |
| 12530 | Hollowville, NY | 7.5 mi |
| 12075 | Ghent, NY | 8 mi |
| 12017 | Austerlitz, NY | 8.1 mi |
| 12037 | Chatham, NY | 8.5 mi |
| 01236 | Housatonic, MA | 8.9 mi |
| 01258 | South Egremont, MA | 9 mi |
Questions about 12529
What is the ZIP+4 code for 12529?
12529 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 12529, you need to look up a specific street address to get them.
What city is 12529?
12529 is assigned to Hillsdale, New York, in Columbia 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.