ZIP Code 11739 — Great River, NY
11739 is a standard (street delivery) ZIP code serving Great River, New York, in Suffolk 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 11739 at a glance
| ZIP code | 11739 |
|---|---|
| Primary city | Great River |
| State | New York (NY) |
| County | Suffolk FIPS 36103 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,225 |
| Coordinates | 40.710580, -73.162750 |
How ZIP+4 works in 11739
The four digits after the hyphen encode a delivery segment inside 11739. 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 11739 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 11739.
| ZIP | City | Distance |
|---|---|---|
| 11730 | East Islip, NY | 1.6 mi |
| 11769 | Oakdale, NY | 2.5 mi |
| 11751 | Islip, NY | 3 mi |
| 11752 | Islip Terrace, NY | 3.3 mi |
| 11796 | West Sayville, NY | 3.5 mi |
| 11706 | Bay Shore, NY | 4.2 mi |
| 11770 | Ocean Beach, NY | 4.4 mi |
| 11716 | Bohemia, NY | 4.6 mi |
| 11782 | Sayville, NY | 4.7 mi |
| 11722 | Central Islip, NY | 5.3 mi |
| 11718 | Brightwaters, NY | 5.3 mi |
| 11705 | Bayport, NY | 6.1 mi |
Questions about 11739
What is the ZIP+4 code for 11739?
11739 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 11739, you need to look up a specific street address to get them.
What city is 11739?
11739 is assigned to Great River, New York, in Suffolk 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.