ZIP Code 12457 — Mount Tremper, NY
12457 is a standard (street delivery) ZIP code serving Mount Tremper, 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 12457 at a glance
| ZIP code | 12457 |
|---|---|
| Primary city | Mount Tremper |
| State | New York (NY) |
| County | Ulster FIPS 36111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,041 |
| Coordinates | 42.039970, -74.246590 |
How ZIP+4 works in 12457
The four digits after the hyphen encode a delivery segment inside 12457. 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 12457 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 12457.
| ZIP | City | Distance |
|---|---|---|
| 12412 | Boiceville, NY | 2.5 mi |
| 12495 | Willow, NY | 2.9 mi |
| 12448 | Lake Hill, NY | 3.6 mi |
| 12416 | Chichester, NY | 4.3 mi |
| 12409 | Bearsville, NY | 4.3 mi |
| 12481 | Shokan, NY | 4.6 mi |
| 12464 | Phoenicia, NY | 5 mi |
| 12433 | Glenford, NY | 5.3 mi |
| 12494 | West Shokan, NY | 6.9 mi |
| 12450 | Lanesville, NY | 6.9 mi |
| 12498 | Woodstock, NY | 7 mi |
| 12491 | West Hurley, NY | 7.6 mi |
Questions about 12457
What is the ZIP+4 code for 12457?
12457 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 12457, you need to look up a specific street address to get them.
What city is 12457?
12457 is assigned to Mount Tremper, 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.