ZIP Code 12121 — Melrose, NY
12121 is a standard (street delivery) ZIP code serving Melrose, New York, in Rensselaer 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 12121 at a glance
| ZIP code | 12121 |
|---|---|
| Primary city | Melrose |
| State | New York (NY) |
| County | Rensselaer FIPS 36083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,280 |
| Coordinates | 42.843680, -73.603980 |
How ZIP+4 works in 12121
The four digits after the hyphen encode a delivery segment inside 12121. 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 12121 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 12121.
| ZIP | City | Distance |
|---|---|---|
| 12182 | Troy, NY | 3.4 mi |
| 12188 | Waterford, NY | 4.9 mi |
| 12185 | Valley Falls, NY | 5.3 mi |
| 12180 | Troy, NY | 6.4 mi |
| 12154 | Schaghticoke, NY | 6.4 mi |
| 12094 | Johnsonville, NY | 6.7 mi |
| 12047 | Cohoes, NY | 7.4 mi |
| 12118 | Mechanicville, NY | 7.9 mi |
| 12183 | Troy, NY | 8 mi |
| 12052 | Cropseyville, NY | 8.7 mi |
| 12065 | Clifton Park, NY | 9.3 mi |
| 12082 | Grafton, NY | 9.4 mi |
Questions about 12121
What is the ZIP+4 code for 12121?
12121 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 12121, you need to look up a specific street address to get them.
What city is 12121?
12121 is assigned to Melrose, New York, in Rensselaer 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.