ZIP Code 12870 — Schroon Lake, NY
12870 is a standard (street delivery) ZIP code serving Schroon Lake, New York, in Essex 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 12870 at a glance
| ZIP code | 12870 |
|---|---|
| Primary city | Schroon Lake |
| State | New York (NY) |
| County | Essex FIPS 36031 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,756 |
| Coordinates | 43.839310, -73.762500 |
How ZIP+4 works in 12870
The four digits after the hyphen encode a delivery segment inside 12870. 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 12870 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 12870.
| ZIP | City | Distance |
|---|---|---|
| 12872 | Severance, NY | 3.6 mi |
| 12858 | Paradox, NY | 5.7 mi |
| 12808 | Adirondack, NY | 6.3 mi |
| 12860 | Pottersville, NY | 8 mi |
| 12857 | Olmstedville, NY | 8.5 mi |
| 12815 | Brant Lake, NY | 10.1 mi |
| 12855 | North Hudson, NY | 11.3 mi |
| 12836 | Hague, NY | 11.5 mi |
| 12883 | Ticonderoga, NY | 12.7 mi |
| 12862 | Riparius, NY | 13.8 mi |
| 12928 | Crown Point, NY | 14.1 mi |
| 12817 | Chestertown, NY | 14.3 mi |
Questions about 12870
What is the ZIP+4 code for 12870?
12870 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 12870, you need to look up a specific street address to get them.
What city is 12870?
12870 is assigned to Schroon Lake, New York, in Essex 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.