ZIP Code 12817 — Chestertown, NY
12817 is a standard (street delivery) ZIP code serving Chestertown, New York, in Warren 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 12817 at a glance
| ZIP code | 12817 |
|---|---|
| Primary city | Chestertown |
| State | New York (NY) |
| County | Warren FIPS 36113 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,168 |
| Coordinates | 43.636970, -73.826140 |
How ZIP+4 works in 12817
The four digits after the hyphen encode a delivery segment inside 12817. 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 12817 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 12817.
| ZIP | City | Distance |
|---|---|---|
| 12886 | Wevertown, NY | 5 mi |
| 12862 | Riparius, NY | 5.3 mi |
| 12860 | Pottersville, NY | 6.4 mi |
| 12885 | Warrensburg, NY | 7.4 mi |
| 12815 | Brant Lake, NY | 7.9 mi |
| 12843 | Johnsburg, NY | 8.4 mi |
| 12808 | Adirondack, NY | 8.5 mi |
| 12853 | North Creek, NY | 9.3 mi |
| 12824 | Diamond Point, NY | 9.4 mi |
| 12814 | Bolton Landing, NY | 9.8 mi |
| 12810 | Athol, NY | 11.4 mi |
| 12811 | Bakers Mills, NY | 13.1 mi |
Questions about 12817
What is the ZIP+4 code for 12817?
12817 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 12817, you need to look up a specific street address to get them.
What city is 12817?
12817 is assigned to Chestertown, New York, in Warren 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.