ZIP Code 11548 — Greenvale, NY
11548 is a standard (street delivery) ZIP code serving Greenvale, New York, in Nassau 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 11548 at a glance
| ZIP code | 11548 |
|---|---|
| Primary city | Greenvale |
| State | New York (NY) |
| County | Nassau FIPS 36059 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,261 |
| Coordinates | 40.814140, -73.609700 |
How ZIP+4 works in 11548
The four digits after the hyphen encode a delivery segment inside 11548. 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 11548 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 11548.
| ZIP | City | Distance |
|---|---|---|
| 11545 | Glen Head, NY | 1.4 mi |
| 11568 | Old Westbury, NY | 2 mi |
| 11547 | Glenwood Landing, NY | 2.1 mi |
| 11576 | Roslyn, NY | 2.3 mi |
| 11577 | Roslyn Heights, NY | 2.6 mi |
| 11579 | Sea Cliff, NY | 2.7 mi |
| 11507 | Albertson, NY | 3.7 mi |
| 11753 | Jericho, NY | 4 mi |
| 11542 | Glen Cove, NY | 4 mi |
| 11596 | Williston Park, NY | 4.1 mi |
| 11732 | East Norwich, NY | 4.2 mi |
| 11590 | Westbury, NY | 4.4 mi |
Questions about 11548
What is the ZIP+4 code for 11548?
11548 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 11548, you need to look up a specific street address to get them.
What city is 11548?
11548 is assigned to Greenvale, New York, in Nassau 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.