ZIP Code 11558 — Island Park, NY
11558 is a standard (street delivery) ZIP code serving Island Park, 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 11558 at a glance
| ZIP code | 11558 |
|---|---|
| Primary city | Island Park |
| State | New York (NY) |
| County | Nassau FIPS 36059 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 8,454 |
| Coordinates | 40.605390, -73.649520 |
How ZIP+4 works in 11558
The four digits after the hyphen encode a delivery segment inside 11558. 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 11558 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 11558.
| ZIP | City | Distance |
|---|---|---|
| 11561 | Long Beach, NY | 1.1 mi |
| 11572 | Oceanside, NY | 2 mi |
| 11518 | East Rockaway, NY | 2.4 mi |
| 11557 | Hewlett, NY | 3.1 mi |
| 11559 | Lawrence, NY | 3.5 mi |
| 11598 | Woodmere, NY | 3.7 mi |
| 11569 | Point Lookout, NY | 3.8 mi |
| 11510 | Baldwin, NY | 3.8 mi |
| 11563 | Lynbrook, NY | 3.8 mi |
| 11570 | Rockville Centre, NY | 4.2 mi |
| 11516 | Cedarhurst, NY | 4.3 mi |
| 11509 | Atlantic Beach, NY | 4.3 mi |
Questions about 11558
What is the ZIP+4 code for 11558?
11558 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 11558, you need to look up a specific street address to get them.
What city is 11558?
11558 is assigned to Island Park, 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.