ZIP Code 11709 — Bayville, NY
11709 is a standard (street delivery) ZIP code serving Bayville, 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 11709 at a glance
| ZIP code | 11709 |
|---|---|
| Primary city | Bayville |
| State | New York (NY) |
| County | Nassau FIPS 36059 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 6,744 |
| Coordinates | 40.906650, -73.560050 |
How ZIP+4 works in 11709
The four digits after the hyphen encode a delivery segment inside 11709. 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 11709 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 11709.
| ZIP | City | Distance |
|---|---|---|
| 11765 | Mill Neck, NY | 1.7 mi |
| 11560 | Locust Valley, NY | 2.4 mi |
| 11771 | Oyster Bay, NY | 3.2 mi |
| 11542 | Glen Cove, NY | 4.4 mi |
| 11732 | East Norwich, NY | 4.6 mi |
| 11545 | Glen Head, NY | 5.7 mi |
| 11791 | Syosset, NY | 6.2 mi |
| 11579 | Sea Cliff, NY | 6.2 mi |
| 11724 | Cold Spring Harbor, NY | 6.3 mi |
| 11548 | Greenvale, NY | 6.9 mi |
| 11547 | Glenwood Landing, NY | 7 mi |
| 11743 | Huntington, NY | 7.2 mi |
Questions about 11709
What is the ZIP+4 code for 11709?
11709 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 11709, you need to look up a specific street address to get them.
What city is 11709?
11709 is assigned to Bayville, 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.